config defaults: macfilter defaults to on
[pve-firewall.git] / src / PVE / Firewall.pm
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1package PVE::Firewall;
2
3use warnings;
4use strict;
585ede43 5
09d5f68e 6use Digest::SHA;
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7use Encode;
8use File::Basename;
9use File::Path;
10use IO::File;
11use Net::IP;
12use POSIX;
06208a01 13use Socket qw(AF_INET AF_INET6 inet_ntop inet_pton);
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14use Storable qw(dclone);
15
16use PVE::Cluster;
06208a01 17use PVE::Corosync;
7ca36671 18use PVE::Exception qw(raise raise_param_exc);
0fd61594 19use PVE::INotify;
e74a87f5 20use PVE::JSONSchema qw(register_standard_option get_standard_option);
2e1ae6b9 21use PVE::Network;
0fd61594 22use PVE::ProcFSTools;
eedcb564 23use PVE::SafeSyslog;
0fd61594 24use PVE::Tools qw($IPV4RE $IPV6RE);
1a301a8d 25use PVE::Tools qw(run_command lock_file dir_glob_foreach);
ecbea048 26
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27my $pvefw_conf_dir = "/etc/pve/firewall";
28my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
fca39c2c 29
fdefeeab 30# dynamically include PVE::QemuServer and PVE::LXC
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31# to avoid dependency problems
32my $have_qemu_server;
33eval {
34 require PVE::QemuServer;
b5a16dd3 35 require PVE::QemuConfig;
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36 $have_qemu_server = 1;
37};
38
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39my $have_lxc;
40eval {
41 require PVE::LXC;
42 $have_lxc = 1;
43};
44
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45my $pve_fw_status_dir = "/var/lib/pve-firewall";
46
47mkdir $pve_fw_status_dir; # make sure this exists
48
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49my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
50my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
f9792937 51our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
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52
53my $max_alias_name_length = 64;
54my $max_ipset_name_length = 64;
5c53cde4 55my $max_group_name_length = 18;
351052d1 56
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57my $PROTOCOLS_WITH_PORTS = {
58 udp => 1, 17 => 1,
59 udplite => 1, 136 => 1,
60 tcp => 1, 6 => 1,
61 dccp => 1, 33 => 1,
62 sctp => 1, 132 => 1,
63};
64
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65PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr);
66sub pve_verify_ip_or_cidr {
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67 my ($cidr, $noerr) = @_;
68
70e524eb 69 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
e34d0e58 70 return $cidr if Net::IP->new($cidr);
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71 return undef if $noerr;
72 die Net::IP::Error() . "\n";
73 }
74 return undef if $noerr;
75 die "value does not look like a valid IP address or CIDR network\n";
76}
77
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78PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias);
79sub pve_verify_ip_or_cidr_or_alias {
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80 my ($cidr, $noerr) = @_;
81
82 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
83
ae029a88 84 return pve_verify_ip_or_cidr($cidr, $noerr);
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85}
86
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87PVE::JSONSchema::register_standard_option('ipset-name', {
88 description => "IP set name.",
89 type => 'string',
351052d1 90 pattern => $ipset_name_pattern,
387d0ffc 91 minLength => 2,
351052d1 92 maxLength => $max_ipset_name_length,
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93});
94
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95PVE::JSONSchema::register_standard_option('pve-fw-alias', {
96 description => "Alias name.",
97 type => 'string',
351052d1 98 pattern => $ip_alias_pattern,
81d574a7 99 minLength => 2,
351052d1 100 maxLength => $max_alias_name_length,
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101});
102
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103PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
104 description => "Log level.",
e34d0e58 105 type => 'string',
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106 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
107 optional => 1,
108});
109
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110PVE::JSONSchema::register_standard_option('pve-security-group-name', {
111 description => "Security Group name.",
112 type => 'string',
44be8ceb 113 pattern => $security_group_name_pattern,
387d0ffc 114 minLength => 2,
351052d1 115 maxLength => $max_group_name_length,
e74a87f5 116});
009ee3ac 117
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118my $feature_ipset_nomatch = 0;
119eval {
120 my (undef, undef, $release) = POSIX::uname();
121 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
122 my ($major, $minor) = ($1, $2);
123 $feature_ipset_nomatch = 1 if ($major > 3) ||
124 ($major == 3 && $minor >= 7);
125 }
126
127};
128
c8301d63 129my $nodename = PVE::INotify::nodename();
c1f17287 130my $hostfw_conf_filename = "/etc/pve/nodes/$nodename/host.fw";
c8301d63 131
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132my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
133
56f313f7 134my $default_log_level = 'nolog'; # avoid logs by default
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135my $global_log_ratelimit = '--limit 1/sec';
136
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137my $log_level_hash = {
138 debug => 7,
139 info => 6,
140 notice => 5,
141 warning => 4,
142 err => 3,
143 crit => 2,
144 alert => 1,
145 emerg => 0,
146};
147
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148my $verbose = 0;
149sub set_verbose {
150 $verbose = shift;
151}
152
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153# %rule
154#
155# name => optional
30c390f9 156# enable => [0|1]
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157# action =>
158# proto =>
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159# sport => port[,port[,port]].. or port:port
160# dport => port[,port[,port]].. or port:port
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161# log => optional, loglevel
162# logmsg => optional, logmsg - overwrites default
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163# iface_in => incomin interface
164# iface_out => outgoing interface
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165# match => optional, overwrites generation of match
166# target => optional, overwrites action
167
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168# we need to overwrite some macros for ipv6
169my $pve_ipv6fw_macros = {
170 'Ping' => [
171 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
172 ],
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173 'NeighborDiscovery' => [
174 "IPv6 neighbor solicitation, neighbor and router advertisement",
c71cdd44 175 { action => 'PARAM', proto => 'icmpv6', dport => 'router-solicitation' },
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176 { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' },
177 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' },
178 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' },
179 ],
a42e9763 180 'DHCPv6' => [
24dd51c2 181 "DHCPv6 traffic",
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182 { action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' },
183 ],
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184 'Trcrt' => [
185 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
186 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
187 ],
188 };
189
857f62c8 190# imported/converted from: /usr/share/shorewall/macro.*
961b4928 191my $pve_fw_macros = {
857f62c8 192 'Amanda' => [
ebd54ae9 193 "Amanda Backup",
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194 { action => 'PARAM', proto => 'udp', dport => '10080' },
195 { action => 'PARAM', proto => 'tcp', dport => '10080' },
196 ],
197 'Auth' => [
ebd54ae9 198 "Auth (identd) traffic",
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199 { action => 'PARAM', proto => 'tcp', dport => '113' },
200 ],
201 'BGP' => [
ebd54ae9 202 "Border Gateway Protocol traffic",
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203 { action => 'PARAM', proto => 'tcp', dport => '179' },
204 ],
205 'BitTorrent' => [
ebd54ae9 206 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 207 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
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208 { action => 'PARAM', proto => 'udp', dport => '6881' },
209 ],
210 'BitTorrent32' => [
ebd54ae9 211 "BitTorrent traffic for BitTorrent 3.2 and later",
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212 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
213 { action => 'PARAM', proto => 'udp', dport => '6881' },
214 ],
06ba9c44 215 'Ceph' => [
e1bfce94 216 "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Daemons)",
a44539a3 217 # Legacy port for protocol v1
06ba9c44 218 { action => 'PARAM', proto => 'tcp', dport => '6789' },
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219 # New port for protocol v2
220 { action => 'PARAM', proto => 'tcp', dport => '3300' },
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221 { action => 'PARAM', proto => 'tcp', dport => '6800:7300' },
222 ],
857f62c8 223 'CVS' => [
ebd54ae9 224 "Concurrent Versions System pserver traffic",
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225 { action => 'PARAM', proto => 'tcp', dport => '2401' },
226 ],
227 'Citrix' => [
ebd54ae9 228 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
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229 { action => 'PARAM', proto => 'tcp', dport => '1494' },
230 { action => 'PARAM', proto => 'udp', dport => '1604' },
231 { action => 'PARAM', proto => 'tcp', dport => '2598' },
232 ],
233 'DAAP' => [
ebd54ae9 234 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
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235 { action => 'PARAM', proto => 'tcp', dport => '3689' },
236 { action => 'PARAM', proto => 'udp', dport => '3689' },
237 ],
238 'DCC' => [
ebd54ae9 239 "Distributed Checksum Clearinghouse spam filtering mechanism",
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240 { action => 'PARAM', proto => 'tcp', dport => '6277' },
241 ],
242 'DHCPfwd' => [
d2c3266d 243 "Forwarded DHCP traffic",
857f62c8 244 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
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245 ],
246 'DNS' => [
ebd54ae9 247 "Domain Name System traffic (upd and tcp)",
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248 { action => 'PARAM', proto => 'udp', dport => '53' },
249 { action => 'PARAM', proto => 'tcp', dport => '53' },
250 ],
251 'Distcc' => [
ebd54ae9 252 "Distributed Compiler service",
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253 { action => 'PARAM', proto => 'tcp', dport => '3632' },
254 ],
857f62c8 255 'FTP' => [
ebd54ae9 256 "File Transfer Protocol",
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257 { action => 'PARAM', proto => 'tcp', dport => '21' },
258 ],
259 'Finger' => [
ebd54ae9 260 "Finger protocol (RFC 742)",
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261 { action => 'PARAM', proto => 'tcp', dport => '79' },
262 ],
263 'GNUnet' => [
ebd54ae9 264 "GNUnet secure peer-to-peer networking traffic",
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265 { action => 'PARAM', proto => 'tcp', dport => '2086' },
266 { action => 'PARAM', proto => 'udp', dport => '2086' },
267 { action => 'PARAM', proto => 'tcp', dport => '1080' },
268 { action => 'PARAM', proto => 'udp', dport => '1080' },
269 ],
270 'GRE' => [
d2c3266d 271 "Generic Routing Encapsulation tunneling protocol",
857f62c8 272 { action => 'PARAM', proto => '47' },
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273 ],
274 'Git' => [
ebd54ae9 275 "Git distributed revision control traffic",
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276 { action => 'PARAM', proto => 'tcp', dport => '9418' },
277 ],
857f62c8 278 'HKP' => [
e1bfce94 279 "OpenPGP HTTP key server protocol traffic",
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280 { action => 'PARAM', proto => 'tcp', dport => '11371' },
281 ],
282 'HTTP' => [
ebd54ae9 283 "Hypertext Transfer Protocol (WWW)",
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284 { action => 'PARAM', proto => 'tcp', dport => '80' },
285 ],
857f62c8 286 'HTTPS' => [
ebd54ae9 287 "Hypertext Transfer Protocol (WWW) over SSL",
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288 { action => 'PARAM', proto => 'tcp', dport => '443' },
289 ],
290 'ICPV2' => [
ebd54ae9 291 "Internet Cache Protocol V2 (Squid) traffic",
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292 { action => 'PARAM', proto => 'udp', dport => '3130' },
293 ],
294 'ICQ' => [
ebd54ae9 295 "AOL Instant Messenger traffic",
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296 { action => 'PARAM', proto => 'tcp', dport => '5190' },
297 ],
298 'IMAP' => [
ebd54ae9 299 "Internet Message Access Protocol",
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300 { action => 'PARAM', proto => 'tcp', dport => '143' },
301 ],
302 'IMAPS' => [
ebd54ae9 303 "Internet Message Access Protocol over SSL",
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304 { action => 'PARAM', proto => 'tcp', dport => '993' },
305 ],
306 'IPIP' => [
d2c3266d 307 "IPIP capsulation traffic",
857f62c8 308 { action => 'PARAM', proto => '94' },
857f62c8 309 ],
857f62c8 310 'IPsec' => [
d2c3266d 311 "IPsec traffic",
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312 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
313 { action => 'PARAM', proto => '50' },
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314 ],
315 'IPsecah' => [
d2c3266d 316 "IPsec authentication (AH) traffic",
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317 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
318 { action => 'PARAM', proto => '51' },
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319 ],
320 'IPsecnat' => [
d2c3266d 321 "IPsec traffic and Nat-Traversal",
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322 { action => 'PARAM', proto => 'udp', dport => '500' },
323 { action => 'PARAM', proto => 'udp', dport => '4500' },
324 { action => 'PARAM', proto => '50' },
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325 ],
326 'IRC' => [
ebd54ae9 327 "Internet Relay Chat traffic",
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328 { action => 'PARAM', proto => 'tcp', dport => '6667' },
329 ],
857f62c8 330 'Jetdirect' => [
ebd54ae9 331 "HP Jetdirect printing",
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332 { action => 'PARAM', proto => 'tcp', dport => '9100' },
333 ],
334 'L2TP' => [
ebd54ae9 335 "Layer 2 Tunneling Protocol traffic",
857f62c8 336 { action => 'PARAM', proto => 'udp', dport => '1701' },
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337 ],
338 'LDAP' => [
ebd54ae9 339 "Lightweight Directory Access Protocol traffic",
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340 { action => 'PARAM', proto => 'tcp', dport => '389' },
341 ],
342 'LDAPS' => [
ebd54ae9 343 "Secure Lightweight Directory Access Protocol traffic",
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344 { action => 'PARAM', proto => 'tcp', dport => '636' },
345 ],
346 'MSNP' => [
ebd54ae9 347 "Microsoft Notification Protocol",
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348 { action => 'PARAM', proto => 'tcp', dport => '1863' },
349 ],
350 'MSSQL' => [
ebd54ae9 351 "Microsoft SQL Server",
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352 { action => 'PARAM', proto => 'tcp', dport => '1433' },
353 ],
354 'Mail' => [
ebd54ae9 355 "Mail traffic (SMTP, SMTPS, Submission)",
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356 { action => 'PARAM', proto => 'tcp', dport => '25' },
357 { action => 'PARAM', proto => 'tcp', dport => '465' },
358 { action => 'PARAM', proto => 'tcp', dport => '587' },
359 ],
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360 'MDNS' => [
361 "Multicast DNS",
362 { action => 'PARAM', proto => 'udp', dport => '5353' },
363 ],
857f62c8 364 'Munin' => [
ebd54ae9 365 "Munin networked resource monitoring traffic",
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366 { action => 'PARAM', proto => 'tcp', dport => '4949' },
367 ],
368 'MySQL' => [
ebd54ae9 369 "MySQL server",
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370 { action => 'PARAM', proto => 'tcp', dport => '3306' },
371 ],
372 'NNTP' => [
ebd54ae9 373 "NNTP traffic (Usenet).",
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374 { action => 'PARAM', proto => 'tcp', dport => '119' },
375 ],
376 'NNTPS' => [
ebd54ae9 377 "Encrypted NNTP traffic (Usenet)",
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378 { action => 'PARAM', proto => 'tcp', dport => '563' },
379 ],
380 'NTP' => [
ebd54ae9 381 "Network Time Protocol (ntpd)",
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382 { action => 'PARAM', proto => 'udp', dport => '123' },
383 ],
857f62c8 384 'OSPF' => [
ebd54ae9 385 "OSPF multicast traffic",
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386 { action => 'PARAM', proto => '89' },
387 ],
388 'OpenVPN' => [
ebd54ae9 389 "OpenVPN traffic",
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390 { action => 'PARAM', proto => 'udp', dport => '1194' },
391 ],
392 'PCA' => [
ebd54ae9 393 "Symantec PCAnywere (tm)",
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394 { action => 'PARAM', proto => 'udp', dport => '5632' },
395 { action => 'PARAM', proto => 'tcp', dport => '5631' },
396 ],
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397 'PMG' => [
398 "Proxmox Mail Gateway web interface",
399 { action => 'PARAM', proto => 'tcp', dport => '8006' },
400 ],
857f62c8 401 'POP3' => [
ebd54ae9 402 "POP3 traffic",
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403 { action => 'PARAM', proto => 'tcp', dport => '110' },
404 ],
405 'POP3S' => [
ebd54ae9 406 "Encrypted POP3 traffic",
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407 { action => 'PARAM', proto => 'tcp', dport => '995' },
408 ],
409 'PPtP' => [
ebd54ae9 410 "Point-to-Point Tunneling Protocol",
857f62c8 411 { action => 'PARAM', proto => '47' },
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412 { action => 'PARAM', proto => 'tcp', dport => '1723' },
413 ],
414 'Ping' => [
ebd54ae9 415 "ICMP echo request",
269d4f13 416 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
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417 ],
418 'PostgreSQL' => [
ebd54ae9 419 "PostgreSQL server",
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420 { action => 'PARAM', proto => 'tcp', dport => '5432' },
421 ],
422 'Printer' => [
ebd54ae9 423 "Line Printer protocol printing",
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424 { action => 'PARAM', proto => 'tcp', dport => '515' },
425 ],
426 'RDP' => [
ebd54ae9 427 "Microsoft Remote Desktop Protocol traffic",
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428 { action => 'PARAM', proto => 'tcp', dport => '3389' },
429 ],
d2c3266d 430 'RIP' => [
ebd54ae9 431 "Routing Information Protocol (bidirectional)",
857f62c8 432 { action => 'PARAM', proto => 'udp', dport => '520' },
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433 ],
434 'RNDC' => [
ebd54ae9 435 "BIND remote management protocol",
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436 { action => 'PARAM', proto => 'tcp', dport => '953' },
437 ],
438 'Razor' => [
ebd54ae9 439 "Razor Antispam System",
056f9211 440 { action => 'PARAM', proto => 'tcp', dport => '2703' },
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441 ],
442 'Rdate' => [
ebd54ae9 443 "Remote time retrieval (rdate)",
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444 { action => 'PARAM', proto => 'tcp', dport => '37' },
445 ],
446 'Rsync' => [
ebd54ae9 447 "Rsync server",
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448 { action => 'PARAM', proto => 'tcp', dport => '873' },
449 ],
450 'SANE' => [
ebd54ae9 451 "SANE network scanning",
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452 { action => 'PARAM', proto => 'tcp', dport => '6566' },
453 ],
454 'SMB' => [
ebd54ae9 455 "Microsoft SMB traffic",
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456 { action => 'PARAM', proto => 'udp', dport => '135,445' },
457 { action => 'PARAM', proto => 'udp', dport => '137:139' },
458 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
459 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
460 ],
857f62c8 461 'SMBswat' => [
ebd54ae9 462 "Samba Web Administration Tool",
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463 { action => 'PARAM', proto => 'tcp', dport => '901' },
464 ],
465 'SMTP' => [
ebd54ae9 466 "Simple Mail Transfer Protocol",
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467 { action => 'PARAM', proto => 'tcp', dport => '25' },
468 ],
469 'SMTPS' => [
ebd54ae9 470 "Encrypted Simple Mail Transfer Protocol",
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471 { action => 'PARAM', proto => 'tcp', dport => '465' },
472 ],
473 'SNMP' => [
ebd54ae9 474 "Simple Network Management Protocol",
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475 { action => 'PARAM', proto => 'udp', dport => '161:162' },
476 { action => 'PARAM', proto => 'tcp', dport => '161' },
477 ],
478 'SPAMD' => [
ebd54ae9 479 "Spam Assassin SPAMD traffic",
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480 { action => 'PARAM', proto => 'tcp', dport => '783' },
481 ],
482 'SSH' => [
ebd54ae9 483 "Secure shell traffic",
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484 { action => 'PARAM', proto => 'tcp', dport => '22' },
485 ],
486 'SVN' => [
ebd54ae9 487 "Subversion server (svnserve)",
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488 { action => 'PARAM', proto => 'tcp', dport => '3690' },
489 ],
490 'SixXS' => [
ebd54ae9 491 "SixXS IPv6 Deployment and Tunnel Broker",
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492 { action => 'PARAM', proto => 'tcp', dport => '3874' },
493 { action => 'PARAM', proto => 'udp', dport => '3740' },
494 { action => 'PARAM', proto => '41' },
495 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
496 ],
497 'Squid' => [
ebd54ae9 498 "Squid web proxy traffic",
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499 { action => 'PARAM', proto => 'tcp', dport => '3128' },
500 ],
501 'Submission' => [
ebd54ae9 502 "Mail message submission traffic",
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503 { action => 'PARAM', proto => 'tcp', dport => '587' },
504 ],
505 'Syslog' => [
ebd54ae9 506 "Syslog protocol (RFC 5424) traffic",
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507 { action => 'PARAM', proto => 'udp', dport => '514' },
508 { action => 'PARAM', proto => 'tcp', dport => '514' },
509 ],
510 'TFTP' => [
ebd54ae9 511 "Trivial File Transfer Protocol traffic",
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512 { action => 'PARAM', proto => 'udp', dport => '69' },
513 ],
514 'Telnet' => [
ebd54ae9 515 "Telnet traffic",
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516 { action => 'PARAM', proto => 'tcp', dport => '23' },
517 ],
518 'Telnets' => [
ebd54ae9 519 "Telnet over SSL",
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520 { action => 'PARAM', proto => 'tcp', dport => '992' },
521 ],
522 'Time' => [
ebd54ae9 523 "RFC 868 Time protocol",
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524 { action => 'PARAM', proto => 'tcp', dport => '37' },
525 ],
526 'Trcrt' => [
ebd54ae9 527 "Traceroute (for up to 30 hops) traffic",
857f62c8 528 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 529 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
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530 ],
531 'VNC' => [
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532 "VNC traffic for VNC display's 0 - 99",
533 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
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534 ],
535 'VNCL' => [
ebd54ae9 536 "VNC traffic from Vncservers to Vncviewers in listen mode",
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537 { action => 'PARAM', proto => 'tcp', dport => '5500' },
538 ],
539 'Web' => [
ebd54ae9 540 "WWW traffic (HTTP and HTTPS)",
857f62c8 541 { action => 'PARAM', proto => 'tcp', dport => '80' },
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542 { action => 'PARAM', proto => 'tcp', dport => '443' },
543 ],
857f62c8 544 'Webcache' => [
ebd54ae9 545 "Web Cache/Proxy traffic (port 8080)",
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546 { action => 'PARAM', proto => 'tcp', dport => '8080' },
547 ],
548 'Webmin' => [
ebd54ae9 549 "Webmin traffic",
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550 { action => 'PARAM', proto => 'tcp', dport => '10000' },
551 ],
552 'Whois' => [
ebd54ae9 553 "Whois (nicname, RFC 3912) traffic",
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554 { action => 'PARAM', proto => 'tcp', dport => '43' },
555 ],
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556};
557
558my $pve_fw_parsed_macros;
ebd54ae9 559my $pve_fw_macro_descr;
21a18e53 560my $pve_fw_macro_ipversion = {};
961b4928 561my $pve_fw_preferred_macro_names = {};
3a616aa0 562
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563my $FWACCEPTMARK_ON = "0x80000000/0x80000000";
564my $FWACCEPTMARK_OFF = "0x00000000/0x80000000";
565
5547adf7 566my $pve_std_chains = {};
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567my $pve_std_chains_conf = {};
568$pve_std_chains_conf->{4} = {
d8f2505e 569 'PVEFW-SET-ACCEPT-MARK' => [
044409e5 570 { target => "-j MARK --set-mark $FWACCEPTMARK_ON" },
d8f2505e 571 ],
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572 'PVEFW-DropBroadcast' => [
573 # same as shorewall 'Broadcast'
574 # simply DROP BROADCAST/MULTICAST/ANYCAST
575 # we can use this to reduce logging
576 { action => 'DROP', dsttype => 'BROADCAST' },
577 { action => 'DROP', dsttype => 'MULTICAST' },
578 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 579 { action => 'DROP', dest => '224.0.0.0/4' },
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580 ],
581 'PVEFW-reject' => [
582 # same as shorewall 'reject'
583 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 584 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c 585 { action => 'DROP', proto => 'icmp' },
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586 { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
587 { match => '-p udp', target => '-j REJECT --reject-with icmp-port-unreachable' },
588 { match => '-p icmp', target => '-j REJECT --reject-with icmp-host-unreachable' },
589 { target => '-j REJECT --reject-with icmp-host-prohibited' },
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590 ],
591 'PVEFW-Drop' => [
cbb5d6f3 592 # same as shorewall 'Drop', which is equal to DROP,
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593 # but REJECT/DROP some packages to reduce logging,
594 # and ACCEPT critical ICMP types
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595 # we are not interested in BROADCAST/MULTICAST/ANYCAST
596 { action => 'PVEFW-DropBroadcast' },
597 # ACCEPT critical ICMP types
598 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
599 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
600 # Drop packets with INVALID state
044409e5 601 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
79929d9c 602 # Drop Microsoft SMB noise
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603 { action => 'DROP', proto => 'udp', dport => '135,445' },
604 { action => 'DROP', proto => 'udp', dport => '137:139' },
79929d9c 605 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 606 { action => 'DROP', proto => 'tcp', dport => '135,139,445' },
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607 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
608 # Drop new/NotSyn traffic so that it doesn't get logged
044409e5 609 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
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610 # Drop DNS replies
611 { action => 'DROP', proto => 'udp', sport => 53 },
612 ],
613 'PVEFW-Reject' => [
cbb5d6f3 614 # same as shorewall 'Reject', which is equal to Reject,
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615 # but REJECT/DROP some packages to reduce logging,
616 # and ACCEPT critical ICMP types
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617 # we are not interested in BROADCAST/MULTICAST/ANYCAST
618 { action => 'PVEFW-DropBroadcast' },
619 # ACCEPT critical ICMP types
620 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
621 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
622 # Drop packets with INVALID state
044409e5 623 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
79929d9c 624 # Drop Microsoft SMB noise
e4882cff 625 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' },
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626 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
627 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 628 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' },
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629 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
630 # Drop new/NotSyn traffic so that it doesn't get logged
044409e5 631 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
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632 # Drop DNS replies
633 { action => 'DROP', proto => 'udp', sport => 53 },
634 ],
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635 'PVEFW-tcpflags' => [
636 # same as shorewall tcpflags action.
e1bfce94 637 # Packets arriving on this interface are checked for some illegal combinations of TCP flags
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638 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
639 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
640 { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
641 { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' },
642 { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' },
d86659ef 643 ],
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644 'PVEFW-smurfs' => [
645 # same as shorewall smurfs action
646 # Filter packets for smurfs (packets with a broadcast address as the source).
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647 { match => '-s 0.0.0.0/32', target => '-j RETURN' }, # allow DHCP
648 { match => '-m addrtype --src-type BROADCAST', target => '-g PVEFW-smurflog' },
649 { match => '-s 224.0.0.0/4', target => '-g PVEFW-smurflog' },
650 ],
651 'PVEFW-smurflog' => [
652 { action => 'DROP', logmsg => 'DROP: ' },
653 ],
654 'PVEFW-logflags' => [
655 { action => 'DROP', logmsg => 'DROP: ' },
bee633ab 656 ],
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657};
658
cfd7cd9c 659$pve_std_chains_conf->{6} = {
47a79ff2 660 'PVEFW-SET-ACCEPT-MARK' => [
044409e5 661 { target => "-j MARK --set-mark $FWACCEPTMARK_ON" },
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662 ],
663 'PVEFW-DropBroadcast' => [
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664 # same as shorewall 'Broadcast'
665 # simply DROP BROADCAST/MULTICAST/ANYCAST
666 # we can use this to reduce logging
667 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
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668 # ipv6 addrtype does not work with kernel 2.6.32
669 #{ action => 'DROP', dsttype => 'MULTICAST' },
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670 #{ action => 'DROP', dsttype => 'ANYCAST' },
671 { action => 'DROP', dest => 'ff00::/8' },
672 #{ action => 'DROP', dest => '224.0.0.0/4' },
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673 ],
674 'PVEFW-reject' => [
649cd835 675 { action => 'DROP', proto => 'icmpv6' },
044409e5 676 { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
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677 { match => '-p udp', target => '-j REJECT --reject-with icmp6-port-unreachable' },
678 { target => '-j REJECT --reject-with icmp6-adm-prohibited' },
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679 ],
680 'PVEFW-Drop' => [
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681 # same as shorewall 'Drop', which is equal to DROP,
682 # but REJECT/DROP some packages to reduce logging,
683 # and ACCEPT critical ICMP types
649cd835 684 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
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685 # we are not interested in BROADCAST/MULTICAST/ANYCAST
686 { action => 'PVEFW-DropBroadcast' },
687 # ACCEPT critical ICMP types
688 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
689 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
690 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
691 # Drop packets with INVALID state
692 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
693 # Drop Microsoft SMB noise
e4882cff 694 { action => 'DROP', proto => 'udp', dport => '135,445' },
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695 { action => 'DROP', proto => 'udp', dport => '137:139'},
696 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 697 { action => 'DROP', proto => 'tcp', dport => '135,139,445' },
649cd835 698 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
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699 # Drop new/NotSyn traffic so that it doesn't get logged
700 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
701 # Drop DNS replies
649cd835 702 { action => 'DROP', proto => 'udp', sport => 53 },
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703 ],
704 'PVEFW-Reject' => [
044409e5
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705 # same as shorewall 'Reject', which is equal to Reject,
706 # but REJECT/DROP some packages to reduce logging,
707 # and ACCEPT critical ICMP types
708 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
709 # we are not interested in BROADCAST/MULTICAST/ANYCAST
710 { action => 'PVEFW-DropBroadcast' },
711 # ACCEPT critical ICMP types
712 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
713 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
714 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
715 # Drop packets with INVALID state
716 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
717 # Drop Microsoft SMB noise
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718 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' },
719 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139' },
044409e5 720 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 721 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' },
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722 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
723 # Drop new/NotSyn traffic so that it doesn't get logged
724 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
725 # Drop DNS replies
726 { action => 'DROP', proto => 'udp', sport => 53 },
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AD
727 ],
728 'PVEFW-tcpflags' => [
044409e5 729 # same as shorewall tcpflags action.
e1bfce94 730 # Packets arriving on this interface are checked for some illegal combinations of TCP flags
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731 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
732 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
733 { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
734 { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' },
735 { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' },
736 ],
737 'PVEFW-logflags' => [
738 { action => 'DROP', logmsg => 'DROP: ' },
47a79ff2 739 ],
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AD
740};
741
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DM
742# iptables -p icmp -h
743my $icmp_type_names = {
744 any => 1,
745 'echo-reply' => 1,
746 'destination-unreachable' => 1,
747 'network-unreachable' => 1,
748 'host-unreachable' => 1,
749 'protocol-unreachable' => 1,
750 'port-unreachable' => 1,
751 'fragmentation-needed' => 1,
752 'source-route-failed' => 1,
753 'network-unknown' => 1,
754 'host-unknown' => 1,
755 'network-prohibited' => 1,
756 'host-prohibited' => 1,
757 'TOS-network-unreachable' => 1,
758 'TOS-host-unreachable' => 1,
759 'communication-prohibited' => 1,
760 'host-precedence-violation' => 1,
761 'precedence-cutoff' => 1,
762 'source-quench' => 1,
763 'redirect' => 1,
764 'network-redirect' => 1,
765 'host-redirect' => 1,
766 'TOS-network-redirect' => 1,
767 'TOS-host-redirect' => 1,
768 'echo-request' => 1,
769 'router-advertisement' => 1,
770 'router-solicitation' => 1,
771 'time-exceeded' => 1,
772 'ttl-zero-during-transit' => 1,
773 'ttl-zero-during-reassembly' => 1,
774 'parameter-problem' => 1,
775 'ip-header-bad' => 1,
776 'required-option-missing' => 1,
777 'timestamp-request' => 1,
778 'timestamp-reply' => 1,
779 'address-mask-request' => 1,
780 'address-mask-reply' => 1,
781};
782
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783# ip6tables -p icmpv6 -h
784
785my $icmpv6_type_names = {
041b9277
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786 'destination-unreachable' => 1,
787 'no-route' => 1,
788 'communication-prohibited' => 1,
d676aa18 789 'beyond-scope' => 1,
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790 'address-unreachable' => 1,
791 'port-unreachable' => 1,
d676aa18
ML
792 'failed-policy' => 1,
793 'reject-route' => 1,
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DM
794 'packet-too-big' => 1,
795 'time-exceeded' => 1,
796 'ttl-zero-during-transit' => 1,
797 'ttl-zero-during-reassembly' => 1,
798 'parameter-problem' => 1,
799 'bad-header' => 1,
800 'unknown-header-type' => 1,
801 'unknown-option' => 1,
802 'echo-request' => 1,
803 'echo-reply' => 1,
804 'router-solicitation' => 1,
805 'router-advertisement' => 1,
593604cc 806 'neighbor-solicitation' => 1,
041b9277 807 'neighbour-solicitation' => 1,
593604cc 808 'neighbor-advertisement' => 1,
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809 'neighbour-advertisement' => 1,
810 'redirect' => 1,
811};
812
0588bf2a
TL
813my $is_valid_icmp_type = sub {
814 my ($type, $valid_types) = @_;
815
816 if ($type =~ m/^\d+$/) {
817 # values for icmp-type range between 0 and 255 (8 bit field)
818 die "invalid icmp-type '$type'\n" if $type > 255;
819 } else {
820 die "unknown icmp-type '$type'\n" if !defined($valid_types->{$type});
821 }
822};
823
54cd19a8 824sub init_firewall_macros {
6158271d 825
961b4928 826 $pve_fw_parsed_macros = {};
9aab3127 827
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828 my $parse = sub {
829 my ($k, $macro) = @_;
e5076eee 830 my $lc_name = lc($k);
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WB
831 $pve_fw_macro_ipversion->{$k} = 0;
832 while (!ref($macro->[0])) {
833 my $desc = shift @$macro;
834 if ($desc eq 'ipv4only') {
835 $pve_fw_macro_ipversion->{$k} = 4;
836 } elsif ($desc eq 'ipv6only') {
837 $pve_fw_macro_ipversion->{$k} = 6;
838 } else {
839 $pve_fw_macro_descr->{$k} = $desc;
840 }
ebd54ae9 841 }
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842 $pve_fw_preferred_macro_names->{$lc_name} = $k;
843 $pve_fw_parsed_macros->{$k} = $macro;
21a18e53
WB
844 };
845
846 foreach my $k (keys %$pve_fw_macros) {
847 &$parse($k, $pve_fw_macros->{$k});
848 }
849
850 foreach my $k (keys %$pve_ipv6fw_macros) {
851 next if $pve_fw_parsed_macros->{$k};
852 &$parse($k, $pve_ipv6fw_macros->{$k});
853 $pve_fw_macro_ipversion->{$k} = 6;
961b4928 854 }
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855}
856
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857init_firewall_macros();
858
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859sub get_macros {
860 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
861}
862
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863my $etc_services;
864
865sub get_etc_services {
866
867 return $etc_services if $etc_services;
868
869 my $filename = "/etc/services";
870
871 my $fh = IO::File->new($filename, O_RDONLY);
872 if (!$fh) {
873 warn "unable to read '$filename' - $!\n";
874 return {};
875 }
876
877 my $services = {};
878
879 while (my $line = <$fh>) {
880 chomp ($line);
881 next if $line =~m/^#/;
882 next if ($line =~m/^\s*$/);
883
d50f24ea 884 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) {
fcba0beb 885 $services->{byid}->{$2}->{name} = $1;
35b66e9d 886 $services->{byid}->{$2}->{port} = $2;
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887 $services->{byid}->{$2}->{$3} = 1;
888 $services->{byname}->{$1} = $services->{byid}->{$2};
889 }
890 }
891
892 close($fh);
893
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894 $etc_services = $services;
895
3a616aa0 896
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897 return $etc_services;
898}
899
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900sub parse_protocol_file {
901 my ($filename) = @_;
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902
903 my $fh = IO::File->new($filename, O_RDONLY);
904 if (!$fh) {
905 warn "unable to read '$filename' - $!\n";
906 return {};
907 }
908
909 my $protocols = {};
910
911 while (my $line = <$fh>) {
912 chomp ($line);
913 next if $line =~m/^#/;
914 next if ($line =~m/^\s*$/);
915
d6dd6e96 916 if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) {
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917 $protocols->{byid}->{$2}->{name} = $1;
918 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
919 }
920 }
921
922 close($fh);
923
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924 return $protocols;
925}
926
927my $etc_protocols;
928
929sub get_etc_protocols {
930 return $etc_protocols if $etc_protocols;
931
932 my $protocols = parse_protocol_file('/etc/protocols');
933
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934 # add special case for ICMP v6
935 $protocols->{byid}->{icmpv6}->{name} = "icmpv6";
936 $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6};
937
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DM
938 $etc_protocols = $protocols;
939
940 return $etc_protocols;
941}
942
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943my $etc_ethertypes;
944
945sub get_etc_ethertypes {
946 $etc_ethertypes = parse_protocol_file('/etc/ethertypes')
947 if !$etc_ethertypes;
948 return $etc_ethertypes;
949}
950
525778d7 951my $__local_network;
93be4333 952
525778d7 953sub local_network {
ac633d30 954 my ($new_value) = @_;
93be4333 955
525778d7 956 $__local_network = $new_value if defined($new_value);
ac633d30 957
525778d7 958 return $__local_network if defined($__local_network);
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DM
959
960 eval {
961 my $nodename = PVE::INotify::nodename();
962
963 my $ip = PVE::Cluster::remote_node_ip($nodename);
964
965 my $testip = Net::IP->new($ip);
bfc488f6 966
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967 my $isv6 = $testip->version == 6;
968 my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route()
969 : PVE::ProcFSTools::read_proc_net_route();
93be4333 970 foreach my $entry (@$routes) {
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WB
971 my $mask;
972 if ($isv6) {
973 $mask = $entry->{prefix};
15c80000 974 next if !$mask; # skip the default route...
5dc356af 975 } else {
2e1ae6b9 976 $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}};
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WB
977 next if !defined($mask);
978 }
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979 my $cidr = "$entry->{dest}/$mask";
980 my $testnet = Net::IP->new($cidr);
15c80000
WB
981 my $overlap = $testnet->overlaps($testip);
982 if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP ||
983 $overlap == $Net::IP::IP_IDENTICAL)
984 {
525778d7 985 $__local_network = $cidr;
93be4333
DM
986 return;
987 }
988 }
989 };
990 warn $@ if $@;
991
525778d7 992 return $__local_network;
93be4333
DM
993}
994
6d959e3f 995# ipset names are limited to 31 characters,
75a12a9d
TL
996# and we use '-v4' or '-v6' to indicate IP versions,
997# and we use '_swap' suffix for atomic update,
6d959e3f 998# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 999
88c26d5e 1000my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
708ba714
DM
1001
1002sub compute_ipset_chain_name {
88c26d5e 1003 my ($vmid, $ipset_name, $ipversion) = @_;
708ba714
DM
1004
1005 $vmid = 0 if !defined($vmid);
1006
88c26d5e 1007 my $id = "$vmid-${ipset_name}-v$ipversion";
708ba714 1008
88c26d5e 1009 if (length($id) > $max_iptables_ipset_name_length) {
708ba714
DM
1010 $id = PVE::Tools::fnv31a_hex($id);
1011 }
1012
1013 return "PVEFW-$id";
1014}
1015
b692f42c
DM
1016sub compute_ipfilter_ipset_name {
1017 my ($iface) = @_;
1018
1019 return "ipfilter-$iface";
1020}
1021
ecbea048
DM
1022sub parse_address_list {
1023 my ($str) = @_;
1024
e2c62733
DM
1025 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
1026 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
1027 return;
1028 }
1029
1030 if ($str =~ m/^${ip_alias_pattern}$/) {
1031 die "alias name too long\n" if length($str) > $max_alias_name_length;
1032 return;
1033 }
d72beb8e 1034
3162af6b
DM
1035 my $count = 0;
1036 my $iprange = 0;
a589b6ac 1037 my $ipversion;
7697c041 1038
55b47371
WB
1039 my @elements = split(/,/, $str);
1040 die "extraneous commas in list\n" if $str ne join(',', @elements);
1041 foreach my $elem (@elements) {
3162af6b 1042 $count++;
c344e509
DM
1043 my $ip = Net::IP->new($elem);
1044 if (!$ip) {
ecbea048
DM
1045 my $err = Net::IP::Error();
1046 die "invalid IP address: $err\n";
1047 }
3162af6b 1048 $iprange = 1 if $elem =~ m/-/;
a589b6ac 1049
c344e509 1050 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM
1051
1052 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 1053 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM
1054
1055 $ipversion = $new_ipversion;
ecbea048 1056 }
e34d0e58 1057
5163367b 1058 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 1059
7697c041 1060 return $ipversion;
ecbea048 1061}
dddd9413 1062
fcba0beb 1063sub parse_port_name_number_or_range {
a1c04f71 1064 my ($str, $dport) = @_;
fcba0beb
DM
1065
1066 my $services = PVE::Firewall::get_etc_services();
7ca36671 1067 my $count = 0;
041b7e8e
DM
1068 my $icmp_port = 0;
1069
55b47371
WB
1070 my @elements = split(/,/, $str);
1071 die "extraneous commas in list\n" if $str ne join(',', @elements);
1072 foreach my $item (@elements) {
aced7e7d 1073 if ($item =~ m/^([0-9]+):([0-9]+)$/) {
6a241ca7 1074 $count += 2;
7ca36671
DM
1075 my ($port1, $port2) = ($1, $2);
1076 die "invalid port '$port1'\n" if $port1 > 65535;
1077 die "invalid port '$port2'\n" if $port2 > 65535;
12be0dfe 1078 die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2;
aced7e7d 1079 } elsif ($item =~ m/^([0-9]+)$/) {
6a241ca7 1080 $count += 1;
7ca36671
DM
1081 my $port = $1;
1082 die "invalid port '$port'\n" if $port > 65535;
1083 } else {
a1c04f71 1084 if ($dport && $icmp_type_names->{$item}) {
041b7e8e 1085 $icmp_port = 1;
a1c04f71 1086 } elsif ($dport && $icmpv6_type_names->{$item}) {
041b9277 1087 $icmp_port = 1;
041b7e8e 1088 } else {
e34d0e58 1089 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 1090 }
fcba0beb
DM
1091 }
1092 }
1093
1978585a 1094 die "ICMP ports not allowed in port range\n" if $icmp_port && $count > 0;
6a241ca7
WB
1095
1096 # I really don't like to use the word number here, but it's the only thing
1097 # that makes sense in a literal way. The range 1:100 counts as 2, not as
1098 # one and not as 100...
1099 die "too many entries in port list (> 15 numbers)\n"
1100 if $count > 15;
041b7e8e 1101
f776d6de 1102 return (scalar(@elements) > 1);
fcba0beb
DM
1103}
1104
a1c04f71
WB
1105PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
1106sub pve_fw_verify_sport_spec {
1107 my ($portstr) = @_;
1108
1109 parse_port_name_number_or_range($portstr, 0);
1110
1111 return $portstr;
1112}
1113
1114PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec);
1115sub pve_fw_verify_dport_spec {
54cd19a8
DM
1116 my ($portstr) = @_;
1117
a1c04f71 1118 parse_port_name_number_or_range($portstr, 1);
54cd19a8
DM
1119
1120 return $portstr;
1121}
1122
d31689ee
DM
1123PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
1124sub pve_fw_verify_addr_spec {
54cd19a8
DM
1125 my ($list) = @_;
1126
1127 parse_address_list($list);
1128
1129 return $list;
1130}
1131
1132PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
1133sub pve_fw_verify_protocol_spec {
1134 my ($proto) = @_;
1135
1136 my $protocols = get_etc_protocols();
1137
1138 die "unknown protocol '$proto'\n" if $proto &&
1139 !(defined($protocols->{byname}->{$proto}) ||
1140 defined($protocols->{byid}->{$proto}));
1141
1142 return $proto;
1143}
1144
72194c7c
ML
1145PVE::JSONSchema::register_format('pve-fw-icmp-type-spec', \&pve_fw_verify_icmp_type_spec);
1146sub pve_fw_verify_icmp_type_spec {
1147 my ($icmp_type) = @_;
1148
1149 if ($icmp_type_names->{$icmp_type} || $icmpv6_type_names->{$icmp_type}) {
1150 return $icmp_type;
1151 }
1152
1153 die "invalid icmp-type value '$icmp_type'\n" if $icmp_type ne '';
1154
1155 return $icmp_type;
1156}
1157
54cd19a8 1158
d1c53b3e 1159# helper function for API
d1c53b3e 1160
5d38d64f
DM
1161sub copy_opject_with_digest {
1162 my ($object) = @_;
1163
1164 my $sha = Digest::SHA->new('sha1');
1165
1166 my $res = {};
1167 foreach my $k (sort keys %$object) {
1168 my $v = $object->{$k};
0365eb68 1169 next if !defined($v);
5d38d64f
DM
1170 $res->{$k} = $v;
1171 $sha->add($k, ':', $v, "\n");
1172 }
1173
55e686c7 1174 my $digest = $sha->hexdigest;
5d38d64f
DM
1175
1176 $res->{digest} = $digest;
1177
1178 return wantarray ? ($res, $digest) : $res;
1179}
1180
1181sub copy_list_with_digest {
1182 my ($list) = @_;
1183
1184 my $sha = Digest::SHA->new('sha1');
1185
1186 my $res = [];
1187 foreach my $entry (@$list) {
1188 my $data = {};
1189 foreach my $k (sort keys %$entry) {
1190 my $v = $entry->{$k};
0365eb68 1191 next if !defined($v);
5d38d64f 1192 $data->{$k} = $v;
6d9246e7 1193 # Note: digest ignores refs ($rule->{errors})
e83f0d00
DC
1194 # since Digest::SHA expects a series of bytes,
1195 # we have to encode the value here to prevent errors when
1196 # using utf8 characters (eg. in comments)
1197 $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ;
5d38d64f
DM
1198 }
1199 push @$res, $data;
1200 }
1201
55e686c7 1202 my $digest = $sha->hexdigest;
5d38d64f
DM
1203
1204 foreach my $entry (@$res) {
1205 $entry->{digest} = $digest;
1206 }
1207
1208 return wantarray ? ($res, $digest) : $res;
1209}
1210
e313afe0
DM
1211our $cluster_option_properties = {
1212 enable => {
1213 description => "Enable or disable the firewall cluster wide.",
1214 type => 'integer',
1215 minimum => 0,
1216 optional => 1,
1217 },
2549e7ef
SI
1218 ebtables => {
1219 description => "Enable ebtables rules cluster wide.",
1220 type => 'boolean',
1221 default => 1,
1222 optional => 1,
1223 },
e313afe0
DM
1224 policy_in => {
1225 description => "Input policy.",
1226 type => 'string',
1227 optional => 1,
1228 enum => ['ACCEPT', 'REJECT', 'DROP'],
1229 },
1230 policy_out => {
1231 description => "Output policy.",
1232 type => 'string',
1233 optional => 1,
1234 enum => ['ACCEPT', 'REJECT', 'DROP'],
1235 },
cc37e000
TL
1236 log_ratelimit => {
1237 description => "Log ratelimiting settings",
1238 type => 'string', format => {
1239 enable => {
1240 default_key => 1,
1241 description => 'Enable or disable log rate limiting',
1242 type => 'boolean',
1243 default => '1',
1244 },
1245 rate => {
1246 type => 'string',
1247 description => 'Frequency with which the burst bucket gets refilled',
1248 optional => 1,
1249 pattern => '[1-9][0-9]*\/(second|minute|hour|day)',
1250 format_description => 'rate',
1251 default => '1/second',
1252 },
1253 burst => {
1254 type => 'integer',
1255 minimum => 0,
1256 optional => 1,
cf051802 1257 description => 'Initial burst of packages which will always get logged before the rate is applied',
cc37e000
TL
1258 default => 5,
1259 },
1260 },
1261 optional => 1,
1262 },
e313afe0
DM
1263};
1264
1265our $host_option_properties = {
1266 enable => {
1267 description => "Enable host firewall rules.",
1268 type => 'boolean',
1269 optional => 1,
1270 },
1271 log_level_in => get_standard_option('pve-fw-loglevel', {
1272 description => "Log level for incoming traffic." }),
1273 log_level_out => get_standard_option('pve-fw-loglevel', {
1274 description => "Log level for outgoing traffic." }),
1275 tcp_flags_log_level => get_standard_option('pve-fw-loglevel', {
1276 description => "Log level for illegal tcp flags filter." }),
1277 smurf_log_level => get_standard_option('pve-fw-loglevel', {
1278 description => "Log level for SMURFS filter." }),
1279 nosmurfs => {
1280 description => "Enable SMURFS filter.",
1281 type => 'boolean',
1282 optional => 1,
1283 },
1284 tcpflags => {
1285 description => "Filter illegal combinations of TCP flags.",
1286 type => 'boolean',
e1639957 1287 default => 0,
e313afe0
DM
1288 optional => 1,
1289 },
1290 nf_conntrack_max => {
1291 description => "Maximum number of tracked connections.",
1292 type => 'integer',
1293 optional => 1,
b2ec31cc 1294 default => 262144,
e313afe0
DM
1295 minimum => 32768,
1296 },
1297 nf_conntrack_tcp_timeout_established => {
1298 description => "Conntrack established timeout.",
1299 type => 'integer',
1300 optional => 1,
e1639957 1301 default => 432000,
e313afe0
DM
1302 minimum => 7875,
1303 },
ac5dd88e
AD
1304 nf_conntrack_tcp_timeout_syn_recv => {
1305 description => "Conntrack syn recv timeout.",
1306 type => 'integer',
1307 optional => 1,
1308 default => 60,
1309 minimum => 30,
1310 maximum => 60,
1311 },
e313afe0 1312 ndp => {
e1639957 1313 description => "Enable NDP (Neighbor Discovery Protocol).",
e313afe0 1314 type => 'boolean',
e1639957 1315 default => 0,
e313afe0
DM
1316 optional => 1,
1317 },
27c49e25
CE
1318 nf_conntrack_allow_invalid => {
1319 description => "Allow invalid packets on connection tracking.",
1320 type => 'boolean',
1321 default => 0,
1322 optional => 1,
1323 },
ac5dd88e
AD
1324 protection_synflood => {
1325 description => "Enable synflood protection",
1326 type => 'boolean',
1327 default => 0,
1328 optional => 1,
1329 },
1330 protection_synflood_rate => {
1331 description => "Synflood protection rate syn/sec by ip src.",
1332 type => 'integer',
1333 optional => 1,
1334 default => 200,
1335 },
1336 protection_synflood_burst => {
1337 description => "Synflood protection rate burst by ip src.",
1338 type => 'integer',
1339 optional => 1,
1340 default => 1000,
1341 },
e17d3eec
ML
1342 log_nf_conntrack => {
1343 description => "Enable logging of conntrack information.",
1344 type => 'boolean',
1345 default => 0,
1346 optional => 1
1347 },
e313afe0
DM
1348};
1349
1350our $vm_option_properties = {
1351 enable => {
1352 description => "Enable/disable firewall rules.",
1353 type => 'boolean',
e1639957 1354 default => 0,
e313afe0
DM
1355 optional => 1,
1356 },
1357 macfilter => {
1358 description => "Enable/disable MAC address filter.",
1359 type => 'boolean',
2038e26b 1360 default => 1,
e313afe0
DM
1361 optional => 1,
1362 },
1363 dhcp => {
1364 description => "Enable DHCP.",
1365 type => 'boolean',
e1639957 1366 default => 0,
e313afe0
DM
1367 optional => 1,
1368 },
1369 ndp => {
e1639957 1370 description => "Enable NDP (Neighbor Discovery Protocol).",
e313afe0 1371 type => 'boolean',
e1639957 1372 default => 0,
e313afe0
DM
1373 optional => 1,
1374 },
1375 radv => {
1376 description => "Allow sending Router Advertisement.",
1377 type => 'boolean',
1378 optional => 1,
1379 },
1380 ipfilter => {
1381 description => "Enable default IP filters. " .
1382 "This is equivalent to adding an empty ipfilter-net<id> ipset " .
1383 "for every interface. Such ipsets implicitly contain sane default " .
1384 "restrictions such as restricting IPv6 link local addresses to " .
1385 "the one derived from the interface's MAC address. For containers " .
1386 "the configured IP addresses will be implicitly added.",
1387 type => 'boolean',
1388 optional => 1,
1389 },
1390 policy_in => {
1391 description => "Input policy.",
1392 type => 'string',
1393 optional => 1,
1394 enum => ['ACCEPT', 'REJECT', 'DROP'],
1395 },
1396 policy_out => {
1397 description => "Output policy.",
1398 type => 'string',
1399 optional => 1,
1400 enum => ['ACCEPT', 'REJECT', 'DROP'],
1401 },
1402 log_level_in => get_standard_option('pve-fw-loglevel', {
1403 description => "Log level for incoming traffic." }),
1404 log_level_out => get_standard_option('pve-fw-loglevel', {
1405 description => "Log level for outgoing traffic." }),
1406
1407};
1408
fb060a52 1409
7a332151 1410my $addr_list_descr = "This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists.";
fb060a52 1411
7a332151 1412my $port_descr = "You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\\d+:\\d+', for example '80:85', and you can use comma separated list to match several ports or ranges.";
fb060a52 1413
9c7e0858
DM
1414my $rule_properties = {
1415 pos => {
1416 description => "Update rule at position <pos>.",
1417 type => 'integer',
1418 minimum => 0,
1419 optional => 1,
1420 },
c71e785f 1421 digest => get_standard_option('pve-config-digest'),
9c7e0858 1422 type => {
e50429af 1423 description => "Rule type.",
9c7e0858
DM
1424 type => 'string',
1425 optional => 1,
1426 enum => ['in', 'out', 'group'],
1427 },
1428 action => {
c14dacdf 1429 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM
1430 type => 'string',
1431 optional => 1,
44be8ceb 1432 pattern => $security_group_name_pattern,
c14dacdf
DM
1433 maxLength => 20,
1434 minLength => 2,
9c7e0858 1435 },
e5076eee 1436 macro => {
e50429af 1437 description => "Use predefined standard macro.",
e5076eee
DM
1438 type => 'string',
1439 optional => 1,
54cd19a8 1440 maxLength => 128,
e5076eee 1441 },
fb060a52 1442 iface => get_standard_option('pve-iface', {
7ccaa5f1 1443 description => "Network interface name. You have to use network configuration key names for VMs and containers ('net\\d+'). Host related rules can use arbitrary strings.",
fb060a52
DM
1444 optional => 1
1445 }),
9c7e0858 1446 source => {
fb060a52 1447 description => "Restrict packet source address. $addr_list_descr",
d31689ee 1448 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858 1449 optional => 1,
12d3b75f 1450 maxLength => 512,
9c7e0858
DM
1451 },
1452 dest => {
fb060a52 1453 description => "Restrict packet destination address. $addr_list_descr",
d31689ee 1454 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858 1455 optional => 1,
12d3b75f 1456 maxLength => 512,
9c7e0858
DM
1457 },
1458 proto => {
fb060a52 1459 description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
54cd19a8 1460 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM
1461 optional => 1,
1462 },
1463 enable => {
e50429af 1464 description => "Flag to enable/disable a rule.",
72d055fc
AG
1465 type => 'integer',
1466 minimum => 0,
9c7e0858
DM
1467 optional => 1,
1468 },
3489f8a2
CE
1469 log => get_standard_option('pve-fw-loglevel', {
1470 description => "Log level for firewall rule.",
1471 }),
9c7e0858 1472 sport => {
fb060a52 1473 description => "Restrict TCP/UDP source port. $port_descr",
a1c04f71 1474 type => 'string', format => 'pve-fw-sport-spec',
9c7e0858
DM
1475 optional => 1,
1476 },
1477 dport => {
fb060a52 1478 description => "Restrict TCP/UDP destination port. $port_descr",
a1c04f71 1479 type => 'string', format => 'pve-fw-dport-spec',
9c7e0858
DM
1480 optional => 1,
1481 },
1482 comment => {
e50429af 1483 description => "Descriptive comment.",
9c7e0858
DM
1484 type => 'string',
1485 optional => 1,
1486 },
72194c7c
ML
1487 'icmp-type' => {
1488 description => "Specify icmp-type. Only valid if proto equals 'icmp'.",
1489 type => 'string', format => 'pve-fw-icmp-type-spec',
1490 optional => 1,
1491 },
9c7e0858
DM
1492};
1493
1494sub add_rule_properties {
1495 my ($properties) = @_;
1496
1497 foreach my $k (keys %$rule_properties) {
3655b01f
DM
1498 my $h = $rule_properties->{$k};
1499 # copy data, so that we can modify later without side effects
1500 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1501 }
cbb5d6f3 1502
9c7e0858
DM
1503 return $properties;
1504}
1505
5b7974df
DM
1506sub delete_rule_properties {
1507 my ($rule, $delete_str) = @_;
e34d0e58 1508
5b7974df
DM
1509 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1510 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1511 if !defined($rule_properties->{$opt});
1512 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1513 if $opt eq 'type' || $opt eq 'action';
1514 delete $rule->{$opt};
1515 }
1516
1517 return $rule;
1518}
1519
9a2745a0 1520my $apply_macro = sub {
35d1d6da 1521 my ($macro_name, $param, $verify, $ipversion) = @_;
9a2745a0
DM
1522
1523 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1524 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1525
35d1d6da
DM
1526 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1527 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1528 }
1529
21a18e53 1530 # skip macros which are specific to another ipversion
ff5d050e
AG
1531 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1532 return if $ipversion != $required;
1533 }
21a18e53 1534
9a2745a0
DM
1535 my $rules = [];
1536
1537 foreach my $templ (@$macro_rules) {
1538 my $rule = {};
1539 my $param_used = {};
1540 foreach my $k (keys %$templ) {
1541 my $v = $templ->{$k};
1542 if ($v eq 'PARAM') {
1543 $v = $param->{$k};
1544 $param_used->{$k} = 1;
1545 } elsif ($v eq 'DEST') {
1546 $v = $param->{dest};
1547 $param_used->{dest} = 1;
1548 } elsif ($v eq 'SOURCE') {
1549 $v = $param->{source};
1550 $param_used->{source} = 1;
1551 }
1552
1553 if (!defined($v)) {
1554 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1555 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM
1556 die "$msg\n";
1557 }
1558 $rule->{$k} = $v;
1559 }
1560 foreach my $k (keys %$param) {
1561 next if $k eq 'macro';
1562 next if !defined($param->{$k});
1563 next if $param_used->{$k};
1564 if (defined($rule->{$k})) {
1565 if ($rule->{$k} ne $param->{$k}) {
1566 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1567 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM
1568 die "$msg\n";
1569 }
1570 } else {
1571 $rule->{$k} = $param->{$k};
1572 }
1573 }
1574 push @$rules, $rule;
1575 }
1576
1577 return $rules;
1578};
1579
b6b8e6ad
DM
1580my $rule_env_iface_lookup = {
1581 'ct' => 1,
1582 'vm' => 1,
1583 'group' => 0,
1584 'cluster' => 1,
1585 'host' => 1,
1586};
1587
7ca36671 1588sub verify_rule {
a523e057 1589 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM
1590
1591 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1592
b6b8e6ad
DM
1593 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1594 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1595
a523e057
DM
1596 my $errors = $rule->{errors} || {};
1597
6d9246e7 1598 my $error_count = 0;
7ca36671 1599
6d9246e7
DM
1600 my $add_error = sub {
1601 my ($param, $msg) = @_;
d4cda423 1602 chomp $msg;
6d9246e7
DM
1603 raise_param_exc({ $param => $msg }) if !$noerr;
1604 $error_count++;
1605 $errors->{$param} = $msg if !$errors->{$param};
1606 };
1607
eea9d2a1
DM
1608 my $ipversion;
1609 my $set_ip_version = sub {
1610 my $vers = shift;
1611 if ($vers) {
e1bfce94 1612 die "detected mixed ipv4/ipv6 addresses in rule\n"
eea9d2a1
DM
1613 if $ipversion && ($vers != $ipversion);
1614 $ipversion = $vers;
1615 }
1616 };
1617
a523e057 1618 my $check_ipset_or_alias_property = sub {
ae029a88 1619 my ($name, $expected_ipversion) = @_;
a523e057
DM
1620
1621 if (my $value = $rule->{$name}) {
1622 if ($value =~ m/^\+/) {
4dfe04e6 1623 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1624 &$add_error($name, "no such ipset '$1'")
a523e057 1625 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1626
a523e057 1627 } else {
351052d1 1628 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM
1629 }
1630 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1631 my $alias = lc($value);
bfc488f6 1632 &$add_error($name, "no such alias '$value'")
70e524eb 1633 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
04f5088f 1634 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
70e524eb
AD
1635 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1636
eea9d2a1 1637 &$set_ip_version($e->{ipversion});
a523e057
DM
1638 }
1639 }
1640 };
1641
6d9246e7
DM
1642 my $type = $rule->{type};
1643 my $action = $rule->{action};
bfc488f6 1644
6d9246e7
DM
1645 &$add_error('type', "missing property") if !$type;
1646 &$add_error('action', "missing property") if !$action;
1647
1648 if ($type) {
1649 if ($type eq 'in' || $type eq 'out') {
1650 &$add_error('action', "unknown action '$action'")
1651 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1652 } elsif ($type eq 'group') {
1653 &$add_error('type', "security groups not allowed")
1654 if !$allow_groups;
1655 &$add_error('action', "invalid characters in security group name")
1656 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1657 } else {
1658 &$add_error('type', "unknown rule type '$type'");
1659 }
7ca36671 1660 }
e34d0e58 1661
dba740a9 1662 if ($rule->{iface}) {
bfc488f6 1663 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1664 if !$allow_iface;
dba740a9 1665 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1666 &$add_error('iface', $@) if $@;
fdefeeab 1667 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
b6b8e6ad
DM
1668 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1669 if $rule->{iface} !~ m/^net(\d+)$/;
b6b8e6ad
DM
1670 }
1671 }
7ca36671
DM
1672
1673 if ($rule->{macro}) {
6d9246e7
DM
1674 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1675 $rule->{macro} = $preferred_name;
1676 } else {
1677 &$add_error('macro', "unknown macro '$rule->{macro}'");
1678 }
1679 }
1680
1681 if ($rule->{proto}) {
1682 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1683 &$add_error('proto', $@) if $@;
041b9277 1684 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
72194c7c
ML
1685 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
1686 &$set_ip_version(6) if $rule->{proto} eq 'ipv6-icmp';
6d9246e7 1687 }
7ca36671
DM
1688
1689 if ($rule->{dport}) {
a1c04f71 1690 eval { parse_port_name_number_or_range($rule->{dport}, 1); };
6d9246e7 1691 &$add_error('dport', $@) if $@;
48e3963e 1692 my $proto = $rule->{proto};
6d9246e7 1693 &$add_error('proto', "missing property - 'dport' requires this property")
48e3963e
WB
1694 if !$proto;
1695 &$add_error('dport', "protocol '$proto' does not support ports")
1696 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1697 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
6d9246e7 1698 }
7ca36671 1699
72194c7c
ML
1700 if (my $icmp_type = $rule ->{'icmp-type'}) {
1701 my $proto = $rule->{proto};
1702 &$add_error('proto', "missing property - 'icmp-type' requires this property")
1703 if $proto ne 'icmp' && $proto ne 'icmpv6' && $proto ne 'ipv6-icmp';
1704 &$add_error('icmp-type', "'icmp-type' cannot be specified together with 'dport'")
1705 if $rule->{dport};
1706 if ($proto eq 'icmp' && !$icmp_type_names->{$icmp_type}) {
1707 &$add_error('icmp-type', "invalid icmp-type '$icmp_type' for proto 'icmp'");
1708 } elsif (($proto eq 'icmpv6' || $proto eq 'ipv6-icmp') && !$icmpv6_type_names->{$icmp_type}) {
1709 &$add_error('icmp-type', "invalid icmp-type '$icmp_type' for proto '$proto'");
1710 }
1711 }
1712
7ca36671 1713 if ($rule->{sport}) {
a1c04f71 1714 eval { parse_port_name_number_or_range($rule->{sport}, 0); };
6d9246e7 1715 &$add_error('sport', $@) if $@;
48e3963e 1716 my $proto = $rule->{proto};
6d9246e7 1717 &$add_error('proto', "missing property - 'sport' requires this property")
48e3963e
WB
1718 if !$proto;
1719 &$add_error('sport', "protocol '$proto' does not support ports")
1720 if !$PROTOCOLS_WITH_PORTS->{$proto};
7ca36671
DM
1721 }
1722
1723 if ($rule->{source}) {
75a12a9d 1724 eval {
041b9277
DM
1725 my $source_ipversion = parse_address_list($rule->{source});
1726 &$set_ip_version($source_ipversion);
1727 };
6d9246e7 1728 &$add_error('source', $@) if $@;
ae029a88 1729 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM
1730 }
1731
1732 if ($rule->{dest}) {
75a12a9d
TL
1733 eval {
1734 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1735 &$set_ip_version($dest_ipversion);
9e2205e5 1736 };
6d9246e7 1737 &$add_error('dest', $@) if $@;
ae029a88 1738 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM
1739 }
1740
35d1d6da
DM
1741 $rule->{ipversion} = $ipversion if $ipversion;
1742
a523e057 1743 if ($rule->{macro} && !$error_count) {
35d1d6da 1744 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM
1745 if (my $err = $@) {
1746 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1747 my $eh = $err->{errors};
1748 foreach my $p (keys %$eh) {
1749 &$add_error($p, $eh->{$p});
1750 }
1751 } else {
1752 &$add_error('macro', "$err");
1753 }
1754 }
9a2745a0
DM
1755 }
1756
6d9246e7
DM
1757 $rule->{errors} = $errors if $error_count;
1758
7ca36671
DM
1759 return $rule;
1760}
1761
9c7e0858
DM
1762sub copy_rule_data {
1763 my ($rule, $param) = @_;
1764
1765 foreach my $k (keys %$rule_properties) {
1766 if (defined(my $v = $param->{$k})) {
1767 if ($v eq '' || $v eq '-') {
1768 delete $rule->{$k};
1769 } else {
1770 $rule->{$k} = $v;
1771 }
9c7e0858
DM
1772 }
1773 }
7ca36671 1774
9c7e0858
DM
1775 return $rule;
1776}
1777
9f6845cf
DM
1778sub rules_modify_permissions {
1779 my ($rule_env) = @_;
1780
1781 if ($rule_env eq 'host') {
1782 return {
1783 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1784 };
1785 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1786 return {
1787 check => ['perm', '/', [ 'Sys.Modify' ]],
1788 };
3b4882dc 1789 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM
1790 return {
1791 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1792 }
1793 }
1794
1795 return undef;
1796}
1797
1798sub rules_audit_permissions {
1799 my ($rule_env) = @_;
1800
1801 if ($rule_env eq 'host') {
1802 return {
1803 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1804 };
1805 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1806 return {
1807 check => ['perm', '/', [ 'Sys.Audit' ]],
1808 };
3b4882dc 1809 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM
1810 return {
1811 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1812 }
1813 }
1814
1815 return undef;
1816}
1817
9c7e0858 1818# core functions
780bcc0f
DM
1819
1820sub enable_bridge_firewall {
1821
780bcc0f 1822
5f0a912c
DM
1823 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1824 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1825
6a8a75db
DM
1826 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1827 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1828
780bcc0f
DM
1829}
1830
b16e818e 1831sub iptables_restore_cmdlist {
64e0adf4 1832 my ($cmdlist, $table) = @_;
3a616aa0 1833
64e0adf4
AD
1834 $table = 'filter' if !$table;
1835 run_command(['iptables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD
1836}
1837
17da5c0f 1838sub ip6tables_restore_cmdlist {
64e0adf4 1839 my ($cmdlist, $table) = @_;
17da5c0f 1840
64e0adf4
AD
1841 $table = 'filter' if !$table;
1842 run_command(['ip6tables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD
1843}
1844
34cdedfa
AD
1845sub ipset_restore_cmdlist {
1846 my ($cmdlist) = @_;
1847
bb6ebf3b 1848 run_command(['ipset', 'restore'], input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD
1849}
1850
151c209e
AD
1851sub ebtables_restore_cmdlist {
1852 my ($cmdlist) = @_;
1853
c1031ab1 1854 run_command(['ebtables-restore'], input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
151c209e
AD
1855}
1856
de2a57cd 1857sub iptables_get_chains {
64e0adf4 1858 my ($iptablescmd, $t) = @_;
17da5c0f
AD
1859
1860 $iptablescmd = "iptables" if !$iptablescmd;
64e0adf4 1861 $t = 'filter' if !$t;
de2a57cd
DM
1862
1863 my $res = {};
1864
1865 # check what chains we want to track
1866 my $is_pvefw_chain = sub {
1867 my $name = shift;
1868
dec84fcd
DM
1869 return 1 if $name =~ m/^PVEFW-\S+$/;
1870
a3ded5cd 1871 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
954f24b1 1872
a3ded5cd 1873 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
954f24b1 1874
a3ded5cd 1875 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
a89dfcc6 1876 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
de2a57cd
DM
1877
1878 return undef;
1879 };
1880
1881 my $table = '';
1882
c4a2e5ae
DM
1883 my $hooks = {};
1884
de2a57cd
DM
1885 my $parser = sub {
1886 my $line = shift;
1887
1888 return if $line =~ m/^#/;
1889 return if $line =~ m/^\s*$/;
1890
1891 if ($line =~ m/^\*(\S+)$/) {
1892 $table = $1;
1893 return;
1894 }
1895
64e0adf4 1896 return if $table ne $t;
de2a57cd
DM
1897
1898 if ($line =~ m/^:(\S+)\s/) {
1899 my $chain = $1;
1900 return if !&$is_pvefw_chain($chain);
3fa83edf 1901 $res->{$chain} = "unknown";
09d5f68e 1902 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1903 my ($chain, $sig) = ($1, $2);
de2a57cd 1904 return if !&$is_pvefw_chain($chain);
3fa83edf 1905 $res->{$chain} = $sig;
64e0adf4 1906 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD|PREROUTING)\s+-j\s+PVEFW-\1$/) {
c4a2e5ae 1907 $hooks->{$1} = 1;
de2a57cd
DM
1908 } else {
1909 # simply ignore the rest
1910 return;
1911 }
1912 };
1913
c1031ab1 1914 run_command(["$iptablescmd-save"], outfunc => $parser);
de2a57cd 1915
c4a2e5ae 1916 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM
1917}
1918
9bf7d929
DM
1919sub iptables_chain_digest {
1920 my ($rules) = @_;
1921 my $digest = Digest::SHA->new('sha1');
1922 foreach my $rule (@$rules) { # order is important
1923 $digest->add($rule);
1924 }
1925 return $digest->b64digest;
1926}
1927
3f95d14a
DM
1928sub ipset_chain_digest {
1929 my ($rules) = @_;
4bd0a9c4 1930
3f95d14a
DM
1931 my $digest = Digest::SHA->new('sha1');
1932 foreach my $rule (sort @$rules) { # note: sorted
1933 $digest->add($rule);
1934 }
1935 return $digest->b64digest;
1936}
1937
34cdedfa
AD
1938sub ipset_get_chains {
1939
1940 my $res = {};
1941 my $chains = {};
1942
1943 my $parser = sub {
1944 my $line = shift;
1945
1946 return if $line =~ m/^#/;
1947 return if $line =~ m/^\s*$/;
4b96e877 1948 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43 1949 my $chain = $1;
1bf4d1d6
TL
1950 # ignore initval from ipset v7.7+, won't set that yet so it'd mess up change detection
1951 $line =~ s/\binitval 0x[0-9a-f]+//;
81a0bf43
DM
1952 $line =~ s/\s+$//; # delete trailing white space
1953 push @{$chains->{$chain}}, $line;
34cdedfa
AD
1954 } else {
1955 # simply ignore the rest
1956 return;
1957 }
1958 };
1959
c1031ab1 1960 run_command(['ipset', 'save'], outfunc => $parser);
34cdedfa 1961
3f95d14a
DM
1962 # compute digest for each chain
1963 foreach my $chain (keys %$chains) {
1964 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD
1965 }
1966
1967 return $res;
1968}
1969
151c209e
AD
1970sub ebtables_get_chains {
1971
1972 my $res = {};
1973 my $chains = {};
151c209e
AD
1974 my $parser = sub {
1975 my $line = shift;
1976 return if $line =~ m/^#/;
1977 return if $line =~ m/^\s*$/;
e410833b 1978 if ($line =~ m/^:(\S+)\s(ACCEPT|DROP|RETURN)$/) {
fc1f1de9
WB
1979 # Make sure we know chains exist even if they're empty.
1980 $chains->{$1} //= [];
e410833b 1981 $res->{$1}->{policy} = $2;
84025e99 1982 } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
151c209e
AD
1983 my $chain = $1;
1984 $line =~ s/\s+$//;
1985 push @{$chains->{$chain}}, $line;
1986 } else {
1987 # simply ignore the rest
1988 return;
1989 }
1990 };
1991
c1031ab1 1992 run_command(['ebtables-save'], outfunc => $parser);
84025e99 1993 # compute digest for each chain and store rules as well
151c209e 1994 foreach my $chain (keys %$chains) {
84025e99
SI
1995 $res->{$chain}->{rules} = $chains->{$chain};
1996 $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain});
151c209e
AD
1997 }
1998 return $res;
1999}
2000
e1bfce94 2001# substitute action of rule according to action hash
180da76c
TW
2002sub rule_substitude_action {
2003 my ($rule, $actions) = @_;
2004
2005 if (my $action = $rule->{action}) {
2006 $rule->{action} = $actions->{$action} if defined($actions->{$action});
2007 }
2008}
2009
a44cb745
TW
2010# generate a src or dst match
2011# $dir(ection) is either d or s
2012sub ipt_gen_src_or_dst_match {
2013 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
2014
2015 my $srcdst;
2016 if ($dir eq 's') {
2017 $srcdst = "src";
2018 } elsif ($dir eq 'd') {
2019 $srcdst = "dst";
2020 } else {
2021 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
2022 }
2023
2024 my $match;
2025 if ($adr =~ m/^\+/) {
2026 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
2027 my $name = $1;
2028 my $ipset_chain;
2029 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
2030 $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
2031 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
2032 $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
2033 } else {
2034 die "no such ipset '$name'\n";
2035 }
2036 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
2037 } else {
2038 die "invalid security group name '$adr'\n";
2039 }
2040 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
2041 my $alias = lc($adr);
2042 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
2043 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
2044 die "no such alias '$adr'\n" if !$e;
2045 $match = "-${dir} $e->{cidr}";
2046 } elsif ($adr =~ m/\-/){
2047 $match = "-m iprange --${srcdst}-range $adr";
2048 } else {
2049 $match = "-${dir} $adr";
2050 }
2051
2052 return $match;
2053}
2054
30c390f9
TW
2055# convert a %rule to an array of iptables commands
2056sub ipt_rule_to_cmds {
2057 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
2058
2059 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
2060
2061 my @match = ();
2062
2063 if (defined $rule->{match}) {
2064 push @match, $rule->{match};
2065 } else {
2066 push @match, "-i $rule->{iface_in}" if $rule->{iface_in};
2067 push @match, "-o $rule->{iface_out}" if $rule->{iface_out};
2068
2069 if ($rule->{source}) {
2070 push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf);
2071 }
2072 if ($rule->{dest}) {
2073 push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf);
2074 }
2075
2076 if (my $proto = $rule->{proto}) {
2077 push @match, "-p $proto";
2078
f776d6de
WB
2079 my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1);
2080 my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0);
30c390f9 2081
f776d6de 2082 my $add_dport = sub {
88614d72 2083 return if !defined($rule->{dport});
3dffed4c 2084
0588bf2a 2085 # NOTE: we re-use dport to store --icmp-type for icmp* protocol
30c390f9 2086 if ($proto eq 'icmp') {
0588bf2a 2087 $is_valid_icmp_type->($rule->{dport}, $icmp_type_names);
30c390f9
TW
2088 push @match, "-m icmp --icmp-type $rule->{dport}";
2089 } elsif ($proto eq 'icmpv6') {
0588bf2a 2090 $is_valid_icmp_type->($rule->{dport}, $icmpv6_type_names);
30c390f9
TW
2091 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
2092 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
2093 die "protocol $proto does not have ports\n";
f776d6de
WB
2094 } elsif ($multidport) {
2095 push @match, "--match multiport", "--dports $rule->{dport}";
30c390f9 2096 } else {
88614d72 2097 return if !$rule->{dport};
f776d6de 2098 push @match, "--dport $rule->{dport}";
30c390f9 2099 }
f776d6de 2100 };
30c390f9 2101
f776d6de
WB
2102 my $add_sport = sub {
2103 return if !$rule->{sport};
3dffed4c 2104
30c390f9
TW
2105 die "protocol $proto does not have ports\n"
2106 if !$PROTOCOLS_WITH_PORTS->{$proto};
f776d6de
WB
2107 if ($multisport) {
2108 push @match, "--match multiport", "--sports $rule->{sport}";
30c390f9
TW
2109 } else {
2110 push @match, "--sport $rule->{sport}";
2111 }
f776d6de
WB
2112 };
2113
72194c7c
ML
2114 my $add_icmp_type = sub {
2115 return if !defined($rule->{'icmp-type'}) || $rule->{'icmp-type'} eq '';
2116
2117 die "'icmp-type' can only be set if 'icmp', 'icmpv6' or 'ipv6-icmp' is specified\n"
2118 if ($proto ne 'icmp') && ($proto ne 'icmpv6') && ($proto ne 'ipv6-icmp');
2119 my $type = $proto eq 'icmp' ? 'icmp-type' : 'icmpv6-type';
2120
2121 push @match, "-m $proto --$type $rule->{'icmp-type'}";
2122 };
2123
3dffed4c 2124 # order matters - single port before multiport!
72194c7c 2125 $add_icmp_type->();
f776d6de
WB
2126 $add_dport->() if $multisport;
2127 $add_sport->();
2128 $add_dport->() if !$multisport;
30c390f9
TW
2129 } elsif ($rule->{dport} || $rule->{sport}) {
2130 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
2131 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
2132 }
2133
2134 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
2135 }
2136 my $matchstr = scalar(@match) ? join(' ', @match) : "";
2137
2138 my $targetstr;
2139 if (defined $rule->{target}) {
2140 $targetstr = $rule->{target};
2141 } else {
2142 my $action = (defined $rule->{action}) ? $rule->{action} : "";
2143 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
2144 $targetstr = ($goto) ? "-g $action" : "-j $action";
2145 }
2146
2147 my @iptcmds;
2db2b6aa
TL
2148 my $log = $rule->{log};
2149 if (defined($log) && $log ne 'nolog') {
3489f8a2
CE
2150 my $loglevel = $log_level_hash->{$log};
2151 my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel);
30c390f9
TW
2152 push @iptcmds, "-A $chain $matchstr $logaction";
2153 }
2154 push @iptcmds, "-A $chain $matchstr $targetstr";
2155 return @iptcmds;
2156}
2157
eba0fb64 2158sub ruleset_generate_rule {
3489f8a2 2159 my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
eba0fb64 2160
e5076eee
DM
2161 my $rules;
2162
2163 if ($rule->{macro}) {
35d1d6da 2164 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM
2165 } else {
2166 $rules = [ $rule ];
2167 }
2168
30c390f9
TW
2169 # update all or nothing
2170 my @ipt_rule_cmds;
2171 foreach my $r (@$rules) {
3489f8a2 2172 push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
30c390f9
TW
2173 }
2174 foreach my $c (@ipt_rule_cmds) {
2175 ruleset_add_ipt_cmd($ruleset, $chain, $c);
2176 }
2177}
2178
3fa83edf
DM
2179sub ruleset_create_chain {
2180 my ($ruleset, $chain) = @_;
3a616aa0 2181
d050c724 2182 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 2183 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 2184
3fa83edf
DM
2185 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2186
2187 $ruleset->{$chain} = [];
3a616aa0
AD
2188}
2189
3fa83edf
DM
2190sub ruleset_chain_exist {
2191 my ($ruleset, $chain) = @_;
3a616aa0 2192
3fa83edf
DM
2193 return $ruleset->{$chain} ? 1 : undef;
2194}
3a616aa0 2195
30c390f9
TW
2196# add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2197sub ruleset_add_ipt_cmd {
2198 my ($ruleset, $chain, $iptcmd) = @_;
2199
2200 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2201
2202 push @{$ruleset->{$chain}}, $iptcmd;
2203}
2204
1e9c5070 2205sub ruleset_addrule {
3489f8a2 2206 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
1e9c5070 2207
3489f8a2 2208 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1e9c5070 2209
3489f8a2
CE
2210 if ($log) {
2211 my $loglevel = $log_level_hash->{$log};
2212 my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel);
7f7930f8 2213 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
3489f8a2
CE
2214 }
2215 # for stable ebtables digests avoid double-spaces to match ebtables-save output
2216 $match .= ' ' if length($match);
2217 push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
1e9c5070
TW
2218}
2219
3fa83edf 2220sub ruleset_insertrule {
1e9c5070 2221 my ($ruleset, $chain, $match, $action, $log) = @_;
3a616aa0 2222
3fa83edf 2223 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 2224
1e9c5070 2225 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
3fa83edf 2226}
3a616aa0 2227
782c4cde
DM
2228sub get_log_rule_base {
2229 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 2230
782c4cde 2231 $vmid = 0 if !defined($vmid);
7f7930f8 2232 $msg = "" if !defined($msg);
782c4cde 2233
cc37e000
TL
2234 my $rlimit = '';
2235 if (defined($global_log_ratelimit)) {
2236 $rlimit = "-m limit $global_log_ratelimit ";
2237 }
2238
cbb5d6f3 2239 # Note: we use special format for prefix to pass further
7f7930f8 2240 # info to log daemon (VMID, LOGLEVEL and CHAIN)
cc37e000 2241 return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
782c4cde
DM
2242}
2243
ead850e8 2244sub ruleset_add_chain_policy {
88c26d5e 2245 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM
2246
2247 if ($policy eq 'ACCEPT') {
2248
180da76c
TW
2249 my $rule = { action => 'ACCEPT' };
2250 rule_substitude_action($rule, { ACCEPT => $accept_action});
2251 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
ead850e8
DM
2252
2253 } elsif ($policy eq 'DROP') {
2254
1e9c5070 2255 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop");
ead850e8 2256
7f7930f8 2257 ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid);
ead850e8 2258 } elsif ($policy eq 'REJECT') {
1e9c5070 2259 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
ead850e8 2260
d8d4dd67 2261 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid);
ead850e8
DM
2262 } else {
2263 # should not happen
2264 die "internal error: unknown policy '$policy'";
2265 }
2266}
2267
a83abe93 2268sub ruleset_chain_add_ndp {
e8415920 2269 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
a83abe93
WB
2270 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2271
1e9c5070 2272 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept);
d7aa51ac 2273 if ($direction ne 'OUT' || $options->{radv}) {
1e9c5070 2274 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept);
d7aa51ac 2275 }
1e9c5070
TW
2276 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept);
2277 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept);
a83abe93
WB
2278}
2279
e2943485 2280sub ruleset_chain_add_conn_filters {
27c49e25 2281 my ($ruleset, $chain, $allow_invalid, $accept) = @_;
e2943485 2282
27c49e25
CE
2283 if (!$allow_invalid) {
2284 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
2285 }
1e9c5070 2286 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
e2943485
DM
2287}
2288
2289sub ruleset_chain_add_input_filters {
88c26d5e 2290 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD
2291
2292 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD
2293 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
2294 ruleset_create_chain($ruleset, "PVEFW-blacklist");
3489f8a2 2295 ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0);
b5831a0d 2296 }
88c26d5e 2297 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1e9c5070 2298 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
2428e394 2299 }
e2943485
DM
2300
2301 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1 2302 if ($ipversion == 4) {
1e9c5070 2303 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs");
5b5c42b1 2304 }
e2943485
DM
2305 }
2306
2307 if ($options->{tcpflags}) {
1e9c5070 2308 ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags");
e2943485
DM
2309 }
2310}
2311
9e15114a 2312sub ruleset_create_vm_chain {
88c26d5e 2313 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 2314
9e15114a 2315 ruleset_create_chain($ruleset, $chain);
b47ecc88 2316 my $accept = generate_nfqueue($options);
3a616aa0 2317
ce15d90b 2318 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
dcafc5fb
WB
2319 if ($ipversion == 4) {
2320 if ($direction eq 'OUT') {
75a12a9d 2321 ruleset_generate_rule($ruleset, $chain, $ipversion,
dcafc5fb
WB
2322 { action => 'PVEFW-SET-ACCEPT-MARK',
2323 proto => 'udp', sport => 68, dport => 67 });
2324 } else {
2325 ruleset_generate_rule($ruleset, $chain, $ipversion,
2326 { action => 'ACCEPT',
2327 proto => 'udp', sport => 67, dport => 68 });
2328 }
2329 } elsif ($ipversion == 6) {
2330 if ($direction eq 'OUT') {
2331 ruleset_generate_rule($ruleset, $chain, $ipversion,
2332 { action => 'PVEFW-SET-ACCEPT-MARK',
2333 proto => 'udp', sport => 546, dport => 547 });
2334 } else {
2335 ruleset_generate_rule($ruleset, $chain, $ipversion,
2336 { action => 'ACCEPT',
2337 proto => 'udp', sport => 547, dport => 546 });
2338 }
76a2d1e7 2339 }
dcafc5fb 2340
ce15d90b
DM
2341 }
2342
b21aca2c
DM
2343 if ($direction eq 'OUT') {
2344 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1e9c5070 2345 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP");
b21aca2c 2346 }
d7aa51ac 2347 if ($ipversion == 6 && !$options->{radv}) {
1e9c5070 2348 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP");
d7aa51ac 2349 }
808d711d 2350 if ($ipfilter_ipset) {
1e9c5070 2351 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP");
808d711d 2352 }
1e9c5070 2353 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
c29f55c9 2354 }
e8415920
WB
2355
2356 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
2357 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
9e15114a
DM
2358}
2359
4bc6b5ac 2360sub ruleset_add_group_rule {
aedde2c2 2361 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM
2362
2363 my $group = $rule->{action};
2364 my $group_chain = "GROUP-$group-$direction";
2365 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 2366 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 2367 }
bfc488f6 2368
f8b12fff 2369 if ($direction eq 'OUT' && $rule->{iface_out}) {
1e9c5070 2370 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain");
f8b12fff 2371 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1e9c5070 2372 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain");
4bc6b5ac 2373 } else {
1e9c5070 2374 ruleset_addrule($ruleset, $chain, "", "-j $group_chain");
4bc6b5ac
DM
2375 }
2376
1e9c5070 2377 ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action");
4bc6b5ac
DM
2378}
2379
9e15114a 2380sub ruleset_generate_vm_rules {
3489f8a2 2381 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
9e15114a
DM
2382
2383 my $lc_direction = lc($direction);
c29f55c9 2384
6b8ca015
DM
2385 my $in_accept = generate_nfqueue($options);
2386
92e976b3
DM
2387 foreach my $rule (@$rules) {
2388 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 2389 next if !$rule->{enable} || $rule->{errors};
006490cb 2390 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 2391
92e976b3 2392 if ($rule->{type} eq 'group') {
4bc6b5ac 2393 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 2394 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM
2395 } else {
2396 next if $rule->{type} ne $lc_direction;
921dfb33 2397 eval {
3489f8a2 2398 $rule->{logmsg} = "$rule->{action}: ";
921dfb33 2399 if ($direction eq 'OUT') {
180da76c 2400 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
3489f8a2 2401 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33 2402 } else {
180da76c 2403 rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" });
3489f8a2 2404 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33
DM
2405 }
2406 };
2407 warn $@ if $@;
4e6112f9 2408 }
3a616aa0 2409 }
9e15114a
DM
2410}
2411
b47ecc88
AD
2412sub generate_nfqueue {
2413 my ($options) = @_;
2414
73089769
DM
2415 if ($options->{ips}) {
2416 my $action = "NFQUEUE";
2417 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2418 if (defined($3) && defined($1)) {
b47ecc88 2419 $action .= " --queue-balance $1:$3";
73089769 2420 } elsif (defined($1)) {
b47ecc88
AD
2421 $action .= " --queue-num $1";
2422 }
2423 }
8dc92812 2424 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM
2425 return $action;
2426 } else {
2427 return "ACCEPT";
b47ecc88 2428 }
b47ecc88
AD
2429}
2430
da6fc60b 2431sub ruleset_generate_vm_ipsrules {
a01c32c7 2432 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD
2433
2434 if ($options->{ips} && $direction eq 'IN') {
2435 my $nfqueue = generate_nfqueue($options);
2436
a01c32c7 2437 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD
2438 ruleset_create_chain($ruleset, "PVEFW-IPS");
2439 }
2440
1e9c5070 2441 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue");
da6fc60b
AD
2442 }
2443}
2444
9e15114a 2445sub generate_tap_rules_direction {
84870b1a 2446 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM
2447
2448 my $lc_direction = lc($direction);
2449
2450 my $rules = $vmfw_conf->{rules};
2451
2452 my $options = $vmfw_conf->{options};
2453 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2454
2455 my $tapchain = "$iface-$direction";
2456
b692f42c 2457 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2458 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
74601077 2459 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2460
a34cfdd0 2461 if ($options->{enable}) {
033a15b3
ML
2462 # create chain with mac and ip filter
2463 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2464
3489f8a2 2465 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
3a616aa0 2466
a34cfdd0 2467 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2468
a34cfdd0
DM
2469 # implement policy
2470 my $policy;
ccae0b50 2471
a34cfdd0
DM
2472 if ($direction eq 'OUT') {
2473 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2474 } else {
76448f08 2475 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2476 }
ccae0b50 2477
a34cfdd0
DM
2478 my $accept = generate_nfqueue($options);
2479 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2480 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM
2481 } else {
2482 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2483 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2484 }
3a616aa0 2485
3fa83edf 2486 # plug the tap chain to bridge chain
3cc81077 2487 if ($direction eq 'IN') {
a01c32c7 2488 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
8f3aa9cc 2489 "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain");
3cc81077 2490 } else {
a01c32c7 2491 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
8f3aa9cc 2492 "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain");
3cc81077 2493 }
3a616aa0
AD
2494}
2495
d18c1e2b 2496sub enable_host_firewall {
06208a01 2497 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf) = @_;
0bd5f137 2498
92e976b3 2499 my $options = $hostfw_conf->{options};
63324b09 2500 my $cluster_options = $cluster_conf->{options};
92e976b3 2501 my $rules = $hostfw_conf->{rules};
35f0c37e 2502 my $cluster_rules = $cluster_conf->{rules};
178a63be 2503
06208a01
SR
2504 # corosync preparation
2505 my $corosync_rule = "-p udp --dport 5404:5405";
2506 my $corosync_local_addresses = {};
eacd4748 2507 my $multicast_enabled;
06208a01
SR
2508 my $local_hostname = PVE::INotify::nodename();
2509 if (defined($corosync_conf)) {
2510 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2511 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
2512
2513 if ($node_name eq $local_hostname) {
2514 $corosync_local_addresses->{$key} = $node_ip;
2515 }
2516 });
eacd4748
SR
2517
2518 # allow multicast only if enabled in config
81a0a9ff
FG
2519 my $corosync_transport = $corosync_conf->{main}->{totem}->{transport};
2520 $multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp';
06208a01
SR
2521 }
2522
3fa83edf 2523 # host inbound firewall
dec84fcd
DM
2524 my $chain = "PVEFW-HOST-IN";
2525 ruleset_create_chain($ruleset, $chain);
0bd5f137 2526
178a63be
DM
2527 my $loglevel = get_option_log_level($options, "log_level_in");
2528
1e9c5070 2529 ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
4ac863a6 2530
27c49e25 2531 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e8415920 2532 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
88c26d5e 2533 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2534
23e888f8
DM
2535 # we use RETURN because we need to check also tap rules
2536 my $accept_action = 'RETURN';
2537
1e9c5070 2538 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2539
35f0c37e
DM
2540 # add host rules first, so that cluster wide rules can be overwritten
2541 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2542 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2543 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2544
f8b12fff 2545 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2546
1a9978ed 2547 eval {
4fed896b 2548 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2549 if ($rule->{type} eq 'group') {
aedde2c2 2550 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2551 } elsif ($rule->{type} eq 'in') {
180da76c 2552 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2553 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM
2554 }
2555 };
2556 warn $@ if $@;
f8b12fff 2557 delete $rule->{iface_in};
0bd5f137 2558 }
eb399cef
DM
2559
2560 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2561 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2562 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
1e9c5070
TW
2563 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API
2564 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2565 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
2566 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
94e4ec75 2567 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 60000:60050", "-j $accept_action"); # Migration
bfc488f6 2568
06208a01
SR
2569 # corosync inbound rules
2570 if (defined($corosync_conf)) {
eacd4748
SR
2571 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2572 if $multicast_enabled;
3bc79f87 2573
06208a01
SR
2574 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2575 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2576 my $destination = $corosync_local_addresses->{$key};
06208a01 2577
a9c463ce 2578 if ($node_name ne $local_hostname && defined($destination)) {
06208a01 2579 # accept only traffic on same ring
a9c463ce 2580 ruleset_addrule($ruleset, $chain, "-d $destination -s $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR
2581 }
2582 });
3bc79f87 2583 }
0bd5f137 2584
23e888f8 2585 # implement input policy
63324b09 2586 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2587 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2588
3fa83edf 2589 # host outbound firewall
aadd745e 2590 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM
2591 ruleset_create_chain($ruleset, $chain);
2592
178a63be
DM
2593 $loglevel = get_option_log_level($options, "log_level_out");
2594
1e9c5070 2595 ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
e2943485 2596
27c49e25 2597 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e2943485 2598
23e888f8
DM
2599 # we use RETURN because we may want to check other thigs later
2600 $accept_action = 'RETURN';
e8415920 2601 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
23e888f8 2602
1e9c5070 2603 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2604
35f0c37e
DM
2605 # add host rules first, so that cluster wide rules can be overwritten
2606 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2607 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2608 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2609
f8b12fff 2610 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed 2611 eval {
3489f8a2 2612 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2613 if ($rule->{type} eq 'group') {
aedde2c2 2614 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2615 } elsif ($rule->{type} eq 'out') {
180da76c 2616 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2617 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM
2618 }
2619 };
2620 warn $@ if $@;
f8b12fff 2621 delete $rule->{iface_out};
0bd5f137
AD
2622 }
2623
3bc79f87 2624 # allow standard traffic on cluster network
06208a01
SR
2625 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2626 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2627
35d1d6da 2628 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW
2629 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
2630 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
2631 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2632 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
06208a01 2633 }
bfc488f6 2634
06208a01
SR
2635 # corosync outbound rules
2636 if (defined($corosync_conf)) {
eacd4748
SR
2637 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2638 if $multicast_enabled;
06208a01
SR
2639
2640 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2641 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2642 my $source = $corosync_local_addresses->{$key};
06208a01 2643
a9c463ce 2644 if ($node_name ne $local_hostname && defined($source)) {
06208a01 2645 # accept only traffic on same ring
a9c463ce 2646 ruleset_addrule($ruleset, $chain, "-s $source -d $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR
2647 }
2648 });
3bc79f87
DM
2649 }
2650
23e888f8 2651 # implement output policy
63324b09 2652 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2653 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2654
1e9c5070
TW
2655 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT");
2656 ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN");
9d31b418
AD
2657}
2658
2659sub generate_group_rules {
aedde2c2 2660 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2661
c6f5cc88 2662 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2663
b4deedab
DM
2664 if (!$rules) {
2665 warn "no such security group '$group'\n";
2666 $rules = []; # create empty chain
2667 }
2668
3fa83edf 2669 my $chain = "GROUP-${group}-IN";
9d31b418 2670
3fa83edf 2671 ruleset_create_chain($ruleset, $chain);
1e9c5070 2672 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2673
92e976b3
DM
2674 foreach my $rule (@$rules) {
2675 next if $rule->{type} ne 'in';
7a5a402b 2676 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2677 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
180da76c 2678 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
2dc0a26e 2679 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418
AD
2680 }
2681
3fa83edf 2682 $chain = "GROUP-${group}-OUT";
9d31b418 2683
3fa83edf 2684 ruleset_create_chain($ruleset, $chain);
1e9c5070 2685 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2686
92e976b3
DM
2687 foreach my $rule (@$rules) {
2688 next if $rule->{type} ne 'out';
7a5a402b 2689 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2690 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM
2691 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2692 # check also other tap rules later
180da76c 2693 rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" });
2dc0a26e 2694 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418 2695 }
9d31b418
AD
2696}
2697
51bae274
DM
2698my $MAX_NETS = 32;
2699my $valid_netdev_names = {};
2700for (my $i = 0; $i < $MAX_NETS; $i++) {
2701 $valid_netdev_names->{"net$i"} = 1;
2702}
5e1267a5 2703
fe3d79b4
WB
2704sub get_mark_values {
2705 my ($value, $mask) = @_;
2706 $value = hex($value) if $value =~ /^0x/;
2707 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2708 $mask = 0xffffffff if !defined($mask);
2709 return ($value, $mask);
2710}
2711
51bae274 2712sub parse_fw_rule {
40af93c4 2713 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_;
5e1267a5 2714
d4cda423
DM
2715 my $orig_line = $line;
2716
6d9246e7
DM
2717 my $rule = {};
2718
11bac5c2 2719 # we can add single line comments to the end of the rule
6d9246e7
DM
2720 if ($line =~ s/#\s*(.*?)\s*$//) {
2721 $rule->{comment} = decode('utf8', $1);
2722 }
11bac5c2
DM
2723
2724 # we can disable a rule when prefixed with '|'
ea9e5116 2725
6d9246e7 2726 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2727
dba740a9
DM
2728 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2729 die "unable to parse rule: $line\n";
6d9246e7
DM
2730
2731 $rule->{type} = lc($1);
2732 $rule->{action} = $2;
2733
2734 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2735 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2736 $rule->{macro} = $1;
2737 $rule->{action} = $2;
92e976b3 2738 }
51bae274
DM
2739 }
2740
dba740a9
DM
2741 while (length($line)) {
2742 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2743 $rule->{iface} = $1;
dba740a9
DM
2744 next;
2745 }
51bae274 2746
6d9246e7 2747 last if $rule->{type} eq 'group';
51bae274 2748
ab9a6ae6 2749 if ($line =~ s/^(?:-p|--?proto) (\S+)\s*//) {
6d9246e7 2750 $rule->{proto} = $1;
dba740a9
DM
2751 next;
2752 }
6d9246e7 2753
ab9a6ae6 2754 if ($line =~ s/^--?dport (\S+)\s*//) {
6d9246e7 2755 $rule->{dport} = $1;
dba740a9
DM
2756 next;
2757 }
6d9246e7 2758
ab9a6ae6 2759 if ($line =~ s/^--?sport (\S+)\s*//) {
6d9246e7 2760 $rule->{sport} = $1;
dba740a9
DM
2761 next;
2762 }
ab9a6ae6 2763 if ($line =~ s/^--?source (\S+)\s*//) {
6d9246e7 2764 $rule->{source} = $1;
dba740a9
DM
2765 next;
2766 }
ab9a6ae6 2767 if ($line =~ s/^--?dest (\S+)\s*//) {
6d9246e7 2768 $rule->{dest} = $1;
dba740a9
DM
2769 next;
2770 }
ab9a6ae6 2771 if ($line =~ s/^--?log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
3489f8a2
CE
2772 $rule->{log} = $1;
2773 next;
2774 }
ab9a6ae6 2775 if ($line =~ s/^--?icmp-type (\S+)\s*//) {
72194c7c
ML
2776 $rule->{'icmp-type'} = $1;
2777 next;
2778 }
51bae274 2779
dba740a9
DM
2780 last;
2781 }
ba791b1f 2782
dba740a9 2783 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2784
a523e057 2785 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
eedcb564
WB
2786 if ($rule->{errors}) {
2787 # The verbose flag really means we're running from the CLI and want
2788 # output on the console - in the other case we really want such errors
2789 # to go into the syslog instead.
2790 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2791 $log->("$prefix - errors in rule parameters: $orig_line\n");
d4cda423 2792 foreach my $p (keys %{$rule->{errors}}) {
eedcb564 2793 $log->(" $p: $rule->{errors}->{$p}\n");
d4cda423
DM
2794 }
2795 }
6d9246e7
DM
2796
2797 return $rule;
51bae274
DM
2798}
2799
c5e8b008
AD
2800sub verify_ethertype {
2801 my ($value) = @_;
2802 my $types = get_etc_ethertypes();
2803 die "unknown ethernet protocol type: $value\n"
2804 if !defined($types->{byname}->{$value}) &&
2805 !defined($types->{byid}->{$value});
2806}
2807
2d404ffc 2808sub parse_vmfw_option {
85c6eaed
DM
2809 my ($line) = @_;
2810
2811 my ($opt, $value);
2812
178a63be
DM
2813 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2814
74601077 2815 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM
2816 $opt = lc($1);
2817 $value = int($2);
178a63be
DM
2818 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2819 $opt = lc($1);
2820 $value = $2 ? lc($3) : '';
72f63fde 2821 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM
2822 $opt = lc($1);
2823 $value = uc($3);
b47ecc88
AD
2824 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2825 $opt = lc($1);
2826 $value = $2;
c5e8b008
AD
2827 } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) {
2828 $opt = lc($1);
2829 $value = $2;
2830 verify_ethertype($_) foreach split(/\s*,\s*/, $value);
9c6b6efd 2831 } else {
85c6eaed
DM
2832 die "can't parse option '$line'\n"
2833 }
2834
2835 return ($opt, $value);
2836}
2837
2d404ffc
DM
2838sub parse_hostfw_option {
2839 my ($line) = @_;
2840
2841 my ($opt, $value);
2842
2843 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2844
ac5dd88e 2845 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) {
2d404ffc
DM
2846 $opt = lc($1);
2847 $value = int($2);
178a63be 2848 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM
2849 $opt = lc($1);
2850 $value = $2 ? lc($3) : '';
ac5dd88e 2851 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established|nf_conntrack_tcp_timeout_syn_recv|protection_synflood_rate|protection_synflood_burst|protection_limit):\s*(\d+)\s*$/i) {
490cdead
DM
2852 $opt = lc($1);
2853 $value = int($2);
2d404ffc 2854 } else {
2d404ffc
DM
2855 die "can't parse option '$line'\n"
2856 }
2857
2858 return ($opt, $value);
2859}
2860
c6f5cc88
DM
2861sub parse_clusterfw_option {
2862 my ($line) = @_;
2863
2864 my ($opt, $value);
2865
72d055fc 2866 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
c6f5cc88
DM
2867 $opt = lc($1);
2868 $value = int($2);
72d055fc
AG
2869 if (($value > 1) && ((time() - $value) > 60)) {
2870 $value = 0
2871 }
2549e7ef 2872 } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
84025e99
SI
2873 $opt = lc($1);
2874 $value = int($2);
63324b09
DM
2875 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2876 $opt = lc($1);
2877 $value = uc($3);
cc37e000
TL
2878 } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) {
2879 $opt = lc($1);
2880 $value = $2;
c6f5cc88 2881 } else {
c6f5cc88
DM
2882 die "can't parse option '$line'\n"
2883 }
2884
2885 return ($opt, $value);
2886}
2887
6c221576
DM
2888sub resolve_alias {
2889 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2890
6d959e3f 2891 my $alias = lc($cidr);
04f5088f 2892 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2893 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2894
6d959e3f
DM
2895 die "no such alias '$cidr'\n" if !$e;;
2896
2897 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM
2898}
2899
ae029a88
DM
2900sub parse_ip_or_cidr {
2901 my ($cidr) = @_;
2902
2903 my $ipversion;
75a12a9d 2904
ae029a88
DM
2905 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2906 $cidr =~ s|/128$||;
2907 $ipversion = 6;
2908 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2909 $cidr =~ s|/32$||;
2910 $ipversion = 4;
2911 } else {
2912 die "value does not look like a valid IP address or CIDR network\n";
2913 }
2914
2915 return wantarray ? ($cidr, $ipversion) : $cidr;
2916}
2917
e76a9f53 2918sub parse_alias {
92e1209b
AD
2919 my ($line) = @_;
2920
81d574a7
DM
2921 # we can add single line comments to the end of the line
2922 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2923
92e1209b 2924 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2925 my ($name, $cidr) = ($1, $2);
ae029a88
DM
2926 my $ipversion;
2927
2928 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2929
81d574a7
DM
2930 my $data = {
2931 name => $name,
2932 cidr => $cidr,
70e524eb 2933 ipversion => $ipversion,
81d574a7
DM
2934 };
2935 $data->{comment} = $comment if $comment;
2936 return $data;
92e1209b
AD
2937 }
2938
81d574a7 2939 return undef;
92e1209b
AD
2940}
2941
e5cd1ee0 2942sub generic_fw_config_parser {
585ede43
TL
2943 my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_;
2944
51bae274
DM
2945 my $section;
2946 my $group;
2947
1210ae94 2948 my $res = $empty_conf;
6158271d 2949
0dbef530
TL
2950 my $raw;
2951 if ($filename =~ m!^/etc/pve/(.*)$!) {
2952 $raw = PVE::Cluster::get_config($1);
2953 } else {
2954 $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors
2955 }
2956 return {} if !$raw;
2957
644b5fc9
FG
2958 my $curr_group_keys = {};
2959
0dbef530
TL
2960 my $linenr = 0;
2961 while ($raw =~ /^\h*(.*?)\h*$/gm) {
2962 my $line = $1;
2963 $linenr++;
51bae274
DM
2964 next if $line =~ m/^#/;
2965 next if $line =~ m/^\s*$/;
c8c534f7
DM
2966 chomp $line;
2967
961b4928
DM
2968 my $prefix = "$filename (line $linenr)";
2969
1210ae94 2970 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM
2971 $section = 'options';
2972 next;
2973 }
2974
1210ae94 2975 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD
2976 $section = 'aliases';
2977 next;
2978 }
2979
1210ae94 2980 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2981 $section = 'groups';
92e976b3 2982 $group = lc($1);
0d22acb3 2983 my $comment = $2;
351052d1
DM
2984 eval {
2985 die "security group name too long\n" if length($group) > $max_group_name_length;
2986 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2987 };
2988 if (my $err = $@) {
2989 ($section, $group, $comment) = undef;
2990 warn "$prefix: $err";
2991 next;
2992 }
75a12a9d 2993
c85c87f9 2994 $res->{$section}->{$group} = [];
649e4d57
DM
2995 $res->{group_comments}->{$group} = decode('utf8', $comment)
2996 if $comment;
51bae274
DM
2997 next;
2998 }
34cdedfa 2999
1210ae94 3000 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM
3001 $section = 'rules';
3002 next;
3003 }
cbb5d6f3 3004
1210ae94 3005 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD
3006 $section = 'ipset';
3007 $group = lc($1);
d72c631c 3008 my $comment = $2;
75a12a9d 3009 eval {
351052d1
DM
3010 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
3011 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
3012 };
3013 if (my $err = $@) {
3014 ($section, $group, $comment) = undef;
3015 warn "$prefix: $err";
3016 next;
3017 }
3018
c85c87f9 3019 $res->{$section}->{$group} = [];
644b5fc9
FG
3020 $curr_group_keys = {};
3021
e34d0e58 3022 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 3023 if $comment;
34cdedfa
AD
3024 next;
3025 }
3026
c6f5cc88 3027 if (!$section) {
cbb5d6f3 3028 warn "$prefix: skip line - no section\n";
51bae274
DM
3029 next;
3030 }
3031
c6f5cc88
DM
3032 if ($section eq 'options') {
3033 eval {
1210ae94
DM
3034 my ($opt, $value);
3035 if ($rule_env eq 'cluster') {
3036 ($opt, $value) = parse_clusterfw_option($line);
3037 } elsif ($rule_env eq 'host') {
3038 ($opt, $value) = parse_hostfw_option($line);
3039 } else {
3040 ($opt, $value) = parse_vmfw_option($line);
3041 }
c6f5cc88
DM
3042 $res->{options}->{$opt} = $value;
3043 };
3044 warn "$prefix: $@" if $@;
92e1209b
AD
3045 } elsif ($section eq 'aliases') {
3046 eval {
e76a9f53 3047 my $data = parse_alias($line);
81d574a7 3048 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD
3049 };
3050 warn "$prefix: $@" if $@;
c6f5cc88
DM
3051 } elsif ($section eq 'rules') {
3052 my $rule;
40af93c4 3053 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); };
c6f5cc88
DM
3054 if (my $err = $@) {
3055 warn "$prefix: $err";
3056 next;
3057 }
3058 push @{$res->{$section}}, $rule;
3059 } elsif ($section eq 'groups') {
34cdedfa 3060 my $rule;
40af93c4 3061 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group'); };
34cdedfa
AD
3062 if (my $err = $@) {
3063 warn "$prefix: $err";
3064 next;
3065 }
3f95d14a 3066 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 3067 } elsif ($section eq 'ipset') {
9d6f90e6
DM
3068 # we can add single line comments to the end of the rule
3069 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
3070
30f1b100 3071 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 3072 my $nomatch = $1;
9d6f90e6 3073 my $cidr = $2;
d46b1ef6
DM
3074 my $errors;
3075
3076 if ($nomatch && !$feature_ipset_nomatch) {
3077 $errors->{nomatch} = "nomatch not supported by kernel";
3078 }
2a052ee3 3079
75a12a9d 3080 eval {
4803b296
DM
3081 if ($cidr =~ m/^${ip_alias_pattern}$/) {
3082 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
3083 } else {
ae029a88 3084 $cidr = parse_ip_or_cidr($cidr);
92e1209b 3085 }
644b5fc9
FG
3086 die "duplicate ipset entry for '$cidr'\n"
3087 if defined($curr_group_keys->{$cidr});
4803b296
DM
3088 };
3089 if (my $err = $@) {
c8c534f7 3090 chomp $err;
d46b1ef6 3091 $errors->{cidr} = $err;
2a052ee3 3092 }
2a052ee3 3093
b14db52f
WB
3094 if ($cidr =~ m!/0+$!) {
3095 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
3096 }
3097
e34d0e58 3098 my $entry = { cidr => $cidr };
9d6f90e6
DM
3099 $entry->{nomatch} = 1 if $nomatch;
3100 $entry->{comment} = $comment if $comment;
d46b1ef6 3101 $entry->{errors} = $errors if $errors;
e34d0e58 3102
c8c534f7 3103 if ($verbose && $errors) {
9a3061c7 3104 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM
3105 foreach my $p (keys %{$errors}) {
3106 warn " $p: $errors->{$p}\n";
3107 }
3108 }
3109
9d6f90e6 3110 push @{$res->{$section}->{$group}}, $entry;
644b5fc9 3111 $curr_group_keys->{$c